68 results on '"Pai NP"'
Search Results
2. Head-to-head comparison of accuracy of a rapid point-of-care HIV test with oral versus whole-blood specimens: a systematic review and meta-analysis.
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Pai NP, Balram B, Shivkumar S, Martinez-Cajas JL, Claessens C, Lambert G, Peeling RW, and Joseph L
- Published
- 2012
3. Simultaneous triple point-of-care testing for HIV, syphilis and hepatitis B virus to prevent mother-to-child transmission in India.
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Pai NP, Kurji J, Singam A, Barick R, Jafari Y, Klein MB, Chhabra S, and Shivkumar P
- Abstract
An innovative simultaneous triple point-of-care (STPOC) screening strategy for syphilis, hepatitis B and HIV with Determine((R)) tests was offered to pregnant women presenting for antenatal care and evaluated for feasibility and preference in rural India. Of 1066 participants approached, 1046 consented, of which 1002 (96.0%) completed the strategy. Only 9% reported any history of testing in their current pregnancy. With STPOC screening, 989 women (98.7%) tested negative and 13 had preliminary positive results for infection. The total time taken was 45 minutes per participant. Mothers and infants were provided prophylaxis/treatment for HIV, syphilis and hepatitis B, with interventions initiated within 3-5 days. STPOC was preferred by 99.3% (95%CI: 98.8-99.8%) of participants, facilitated early simultaneous screening for the three infections, timely initiation of prophylaxis/treatment and was feasible in this rural setting. These data suggest that multiplexed STPOC screening for syphilis, hepatitis B and HIV in pregnancy would be desirable for women in rural India. [ABSTRACT FROM AUTHOR]
- Published
- 2012
4. Impact of round-the-clock, rapid oral fluid HIV testing of women in labor in rural India.
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Pai NP, Barick R, Tulsky JP, Shivkumar PV, Cohan D, Kalantri S, Pai M, Klein MB, Chhabra S, Pai, Nitika Pant, Barick, Ritu, Tulsky, Jacqueline P, Shivkumar, Poonam V, Cohan, Deborah, Kalantri, Shriprakash, Pai, Madhukar, Klein, Marina B, and Chhabra, Shakuntala
- Abstract
Background: Testing pregnant women for HIV at the time of labor and delivery is the last opportunity for prevention of mother-to-child HIV transmission (PMTCT) measures, particularly in settings where women do not receive adequate antenatal care. However, HIV testing and counseling of pregnant women in labor is a challenge, especially in resource-constrained settings. In India, many rural women present for delivery without any prior antenatal care. Those who do get antenatal care are not always tested for HIV, because of deficiencies in the provision of HIV testing and counseling services. In this context, we investigated the impact of introducing round-the-clock, rapid, point-of-care HIV testing and counseling in a busy labor ward at a tertiary care hospital in rural India.Methods and Findings: After they provided written informed consent, women admitted to the labor ward of a rural teaching hospital in India were offered two rapid tests on oral fluid and finger-stick specimens (OraQuick Rapid HIV-1/HIV-2 tests, OraSure Technologies). Simultaneously, venous blood was drawn for conventional HIV ELISA testing. Western blot tests were performed for confirmatory testing if women were positive by both rapid tests and dual ELISA, or where test results were discordant. Round-the-clock (24 h, 7 d/wk) abbreviated prepartum and extended postpartum counseling sessions were offered as part of the testing strategy. HIV-positive women were administered PMTCT interventions. Of 1,252 eligible women (age range 18 y to 38 y) approached for consent over a 9 mo period in 2006, 1,222 (98%) accepted HIV testing in the labor ward. Of these, 1,003 (82%) women presented with either no reports or incomplete reports of prior HIV testing results at the time of admission to the labor ward. Of 1,222 women, 15 were diagnosed as HIV-positive (on the basis of two rapid tests, dual ELISA and Western blot), yielding a seroprevalence of 1.23% (95% confidence interval [CI] 0.61%-1.8%). Of the 15 HIV test-positive women, four (27%) had presented with reported HIV status, and 11 (73%) new cases of HIV infection were detected due to rapid testing in the labor room. Thus, 11 HIV-positive women received PMTCT interventions on account of round-the-clock rapid HIV testing and counseling in the labor room. While both OraQuick tests (oral and finger-stick) were 100% specific, one false-negative result was documented (with both oral fluid and finger-stick specimens). Of the 15 HIV-infected women who delivered, 13 infants were HIV seronegative at birth and at 1 and 4 mo after delivery; two HIV-positive infants died within a month of delivery.Conclusions: In a busy rural labor ward setting in India, we demonstrated that it is feasible to introduce a program of round-the-clock rapid HIV testing, including prepartum and extended postpartum counseling sessions. Our data suggest that the availability of round-the-clock rapid HIV testing resulted in successful documentation of HIV serostatus in a large proportion (82%) of rural women who were unaware of their HIV status when admitted to the labor room. In addition, 11 (73%) of a total of 15 HIV-positive women received PMTCT interventions because of round-the-clock rapid testing in the labor ward. These findings are relevant for PMTCT programs in developing countries. [ABSTRACT FROM AUTHOR]- Published
- 2008
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5. Computer extended series solution for unsteady flow in a contracting or expanding pipe.
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Bujurke, NM, Bujurke, N.M., Pai, NP, Pai, N.P., Jayaraman, G, and Jayaraman, G.
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UNSTEADY flow ,FLUID dynamics ,MATHEMATICAL series - Abstract
Investigates unsteady flow in a semi-infinite contracting or expanding pipe using long series analysis. Consideration of pipe radius, wall velocity and kinematic viscosity; Accuracy of the series representing shear stress and pressure gradient; Assessment of flow structure; Flow separation.
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- 1998
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6. Adult primary immune deficiency: what are we missing?
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Srinivasa BT, Alizadehfar R, Desrosiers M, Shuster J, Pai NP, and Tsoukas CM
- Published
- 2012
7. Diagnostic yield as an important metric for the evaluation of novel tuberculosis tests: rationale and guidance for future research.
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Broger T, Marx FM, Theron G, Marais BJ, Nicol MP, Kerkhoff AD, Nathavitharana R, Huerga H, Gupta-Wright A, Kohli M, Nichols BE, Muyoyeta M, Meintjes G, Ruhwald M, Peeling RW, Pai NP, Pollock NR, Pai M, Cattamanchi A, Dowdy DW, Dewan P, and Denkinger CM
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- Humans, Diagnostic Tests, Routine, Sputum microbiology, Tuberculosis diagnosis
- Abstract
Better access to tuberculosis testing is a key priority for fighting tuberculosis, the leading cause of infectious disease deaths in people. Despite the roll-out of molecular WHO-recommended rapid diagnostics to replace sputum smear microscopy over the past decade, a large diagnostic gap remains. Of the estimated 10·6 million people who developed tuberculosis globally in 2022, more than 3·1 million were not diagnosed. An exclusive focus on improving tuberculosis test accuracy alone will not be sufficient to close the diagnostic gap for tuberculosis. Diagnostic yield, which we define as the proportion of people in whom a diagnostic test identifies tuberculosis among all people we attempt to test for tuberculosis, is an important metric not adequately explored. Diagnostic yield is particularly relevant for subpopulations unable to produce sputum such as young children, people living with HIV, and people with subclinical tuberculosis. As more accessible non-sputum specimens (eg, urine, oral swabs, saliva, capillary blood, and breath) are being explored for point-of-care tuberculosis testing, the concept of yield will be of growing importance. Using the example of urine lipoarabinomannan testing, we illustrate how even tests with limited sensitivity can diagnose more people with tuberculosis if they enable increased diagnostic yield. Using tongue swab-based molecular tuberculosis testing as another example, we provide definitions and guidance for the design and conduct of pragmatic studies that assess diagnostic yield. Lastly, we show how diagnostic yield and other important test characteristics, such as cost and implementation feasibility, are essential for increased effective population coverage, which is required for optimal clinical care and transmission impact. We are calling for diagnostic yield to be incorporated into tuberculosis test evaluation processes, including the WHO Grading of Recommendations, Assessment, Development, and Evaluations process, providing a crucial real-life implementation metric that complements traditional accuracy measures., Competing Interests: Declaration of interests TB reports patent applications in the field of tuberculosis detection and is a shareholder of Avelo. MP serves as an adviser for non-profits such as the Bill & Melinda Gates Foundation, FIND, WHO, and the Stop TB Partnership. All other authors declare no competing interests., (Copyright © 2024 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 license. Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2024
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8. A lateral flow assay for Neisseria gonorrhoeae: a step forward for an inexpensive biomarker-based diagnosis of N gonorrhoeae at the point of care?
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Pai NP and Dillon JR
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- Humans, Point-of-Care Systems, Polymerase Chain Reaction, Neisseria gonorrhoeae genetics, Gonorrhea diagnosis
- Abstract
Competing Interests: We declare no competing interests.
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- 2024
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9. Real world outcomes of distributing Lucira Check-It® COVID self-tests in Ontario, Canada: the GetaKit COVID study.
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Orser L, Squires JE, Musten A, Ho N, Lindsay J, Pai NP, and O'Byrne P
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- Humans, Ontario epidemiology, COVID-19 Testing, Mass Screening methods, Vaccination, COVID-19 diagnosis, COVID-19 epidemiology, COVID-19 prevention & control
- Abstract
Background: In Ontario, Canada we developed and implemented an online screening algorithm for the distribution of HIV self-tests, known as GetaKit. During the COVID pandemic, we adapted the GetaKit algorithm to screen for COVID based on population and infection data and distributed COVID rt-LAMP self-tests (using the Lucira Check-It®) to eligible participants., Methods: GetaKit/COVID was a prospective observational study that occurred over a 7-month period from September 2021 to April 2022. All potential participants completed an online registration and risk assessment, including demographic information, COVID symptoms and risk factors, and vaccination status. Bivariate comparisons were performed for three outcomes: results reporting status, vaccination status, and COVID diagnosis status. Data were analysed using Chi-Square for categorial covariates and Independent Samples T-Test and Mann-Whitney U test for continuous covariates. Bivariate logistic regression models were applied to examine associations between the covariates and outcomes., Results: During the study period, we distributed 6469 COVID self-tests to 4160 eligible participants; 46% identified as Black, Indigenous or a Person of Colour (BIPOC). Nearly 70% of participants reported their COVID self-test results; 304 of which were positive. Overall, 91% also reported being vaccinated against COVID. Statistical analysis found living with five or fewer people, having tested for COVID previously, and being fully vaccinated were positive factors in results reporting. For COVID vaccination, people from large urban centers, who identified their ethnicity as white, and who reported previous COVID testing were more likely to be fully vaccinated. Finally, being identified as a contact of someone who had tested positive for COVID and the presence of COVID-related symptoms were found to be positive factors in diagnosis., Conclusions: While most participants who accessed this service were vaccinated against COVID and the majority of diagnoses were identified in participants who had symptoms of, or an exposure to, COVID, our program was able to appropriately link participants to recommended follow-up based on reported risks and results. These findings highlight the utility of online screening algorithms to provide health services, particularly for persons with historical barriers to healthcare access, such as BIPOC or lower-income groups., (© 2024. The Author(s).)
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- 2024
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10. How much does HIV self-testing cost in low and middle income countries? A systematic review of evidence from economic studies.
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Empringham B, Karellis A, Kashkary A, D'Silva O, Carmona S, Suarez MF, Addae A, Pai NP, and Zwerling AA
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- Humans, Developing Countries, Self-Testing, Mass Screening, HIV, HIV Infections epidemiology
- Abstract
Objectives: HIV self-testing (HIVST) has been proposed as an innovative strategy to diagnose human immunodeficiency virus (HIV). While HIVST offers the potential to broaden accessibility of early HIV diagnosis and treatment initiation, this testing strategy incurs additional cost and requires confirmatory testing and treatment. We have conducted the first systematic review to summarize the current economic literature for HIVST in low- and middle-income countries (LMICs)., Design: A search strategy was developed including key terms for HIV, self-testing and cost-effectiveness and was conducted in Medline and Embase databases. Studies were included that reported costs per outcome and included both cost-effectiveness and cost-utility outcome measures. The search strategy identified publications up until August 15, 2023 were included. Abstract and full text screening was conducted and a standardized data abstraction form was used for included studies. Costs are reported in USD, 2020., Results: Our search strategy identified 536 total titles from the search strategy, which were screened down to 25 relevant studies that provided both cost and outcome data on HIVST. There was significant heterogeneity in the HIVST intervention, study population, costs and outcomes reported among included studies. Cost per person tested ranged from $1.09-155. Cost per case diagnosed ranged from $20-1,277. Cost-utility estimates ranged from cost-saving to $1846 per DALY averted. Higher cost-effectiveness estimates were associated with more expensive testing algorithms with increased support for linkage to care and post-test counseling., Conclusion: All studies considered HIVST cost-effective although major drivers were identified included underlying HIV prevalence, testing cost and linkage to care. HIVST is likely to be cost-effective in a LMIC context, however policy makers should be aware of the drivers of cost-effectiveness when implementing HIVST programs as these underlying factors can impact the overall cost-effectiveness of HIVST., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Empringham, Karellis, Kashkary, D’Silva, Carmona, Suarez, Addae, Pai and Zwerling.)
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- 2023
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11. To give or not to give: what is the evidence?
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Pai NP and Zwerling A
- Abstract
Competing Interests: We declare no competing interests.
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- 2023
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12. A skin-colored nodule on the scalp of a woman.
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Desai CA and Kakode NP
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- Female, Humans, Scalp, Skin Neoplasms diagnosis
- Published
- 2022
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13. World AIDS Day 2022: A bittersweet commemoration of the global HIV/AIDS response.
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Routy JP and Pai NP
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- Humans, World Health Organization, Global Health, Acquired Immunodeficiency Syndrome epidemiology, HIV Infections epidemiology
- Published
- 2022
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14. Impact of the COVID-19 pandemic on immune boosting food consumption and overall dietary pattern among selected Indian adults: An observational study.
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Gonella K, Nayak SP, Garg M, and Kotebagilu NP
- Abstract
Background: /Objectives : The rise of the pandemic of the coronavirus SARS-CoV-2 (COVID-19) has upset the diet and lifestyle of individuals. This study was designed to highlight the choices of individuals across different ages to quantify food consumption using the Food Consumption Score, to assess changes, if any, that were caused by the COVID-19 pandemic, and to identify the factors that affected these changes. It also assessed the consumption of immune -boosting foods, including spices and gooseberries, taken as a preventive measure against the virus., Methods: An online survey in a questionnaire format was used in this study to collect information from adults aged 18 to 55 (categorized into young and middle-aged adults) across India. The Food Consumption Score, a tool validated by the World Food Programme, was used to assess frequencies of food consumption per food group., Results: The study revealed that young adults had higher Food Consumption Scores than their middle-aged counterparts during the two time points, pre COVID-19 (55.25 & 32, p = 0.001) and during COVID-19 (57.25 & 32, p=<0.001). The pandemic also led to a tangible rise in the consumption of various foods known for their immune-boosting abilities such as spices, gooseberries, and Neem., Conclusion: The findings of the study indicate an increase in awareness with respect to dietary habits, specifically in terms of consumption of immune boosting foods observed during the COVID-19 pandemic across the age groups., Competing Interests: The authors declare no potential conflicts of interests., (© 2022 The Authors.)
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- 2022
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15. Multiplexed rapid technologies for sexually transmitted infections: a systematic review.
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Karellis A, Naeem F, Nair S, Mallya SD, Routy JP, Gahagan J, Yansouni CP, Kim J, and Pai NP
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- Humans, Mass Screening, Nucleic Acid Amplification Techniques, Sensitivity and Specificity, Technology, Sexually Transmitted Diseases diagnosis
- Abstract
Multiplexed technologies for sexually transmitted infections offer a convenient diagnostics option to screen, confirm, and treat multiple pathogens simultaneously. Due to scarce published real-world diagnostic performance data, we did a systematic review. Two reviewers searched major databases for data published between Jan 1, 2009, and April 20, 2020, and abstracted and analysed sensitivity and specificity data from 24 studies, which assessed 17 multiplex rapid nucleic acid amplification test platforms and seven multiplex immunochromatographic devices. Overall, these studies evaluated 19 sexually transmitted infections in 26 126 individuals. High sensitivity and specificity were shown for rapid nucleic acid amplification platform tests and immunochromatographic devices, with performance varying by pathogen, device, seropositivity, and subpopulation screened. As most devices yielded more than 95% sensitivity and specificity, immunochromatographic tests and rapid nucleic acid amplification test platforms can be advised for screening and confirmatory use. These highly accurate devices are appropriate for integrated, rapid screening initiatives for sexually transmitted infections to screen and treat many of these infections simultaneously, for antimicrobial stewardship, and for disease elimination programmes., Competing Interests: Declaration of interests We declare no competing interests., (Copyright © 2022 Elsevier Ltd. All rights reserved.)
- Published
- 2022
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16. HIV self-testing with digital supports as the new paradigm: A systematic review of global evidence (2010-2021).
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McGuire M, de Waal A, Karellis A, Janssen R, Engel N, Sampath R, Carmona S, Zwerling AA, Suarez MF, and Pai NP
- Abstract
Background: HIV self-testing (HIVST) is recommended by the WHO as an innovative strategy to reach UNAIDS targets to end HIV by 2030. HIVST with digital supports is defined as the use of digital interventions (e.g., website-based, social media, mobile HIVST applications (apps), text messaging (SMS), digital vending machines (digital VMs)) to improve the efficiency and impact of HIVST. HIVST deployment and integration in health services is an emerging priority. We conducted a systematic review aiming to close the gap in evidence that summarizes the impact of digitally supported HIVST and to inform policy recommendations., Methods: We searched PubMed and Embase for articles and abstracts on HIVST with digital supports published during the period February 1st, 2010 to June 15th, 2021, following Cochrane guidelines and PRISMA methodology. We assessed feasibility, acceptability, preference, and impact outcomes across all populations and study designs. Metrics reported were willingness to use HIVST, preferences for HIVST delivery, proportion of first-time testers, HIVST uptake, HIVST kit return rate, and linkage to care. Heterogeneity of the interventions and reported metrics precluded us from conducting a meta-analysis., Findings: 46 studies were narratively synthesized, of which 72% were observational and 28% were RCTs. Half of all studies (54%, 25/46) assessed web-based innovations (e.g., study websites, videos, chatbots), followed by social media (26%, 12/46), HIVST-specific apps (7%, 3/46), SMS (9%, 4/46), and digital VMs (4%, 2/46). Web-based innovations were found to be acceptable (77-97%), preferred over in-person and hybrid options by more first-time testers (47-48%), highly feasible (93-95%), and were overall effective in supporting linkage to care (53-100%). Social media and app-based innovations also had high acceptability (87-95%) and linkage to care proportions (80-100%). SMS innovations increased kit return rates (54-94%) and HIVST uptake among hard-to-reach groups. Finally, digital VMs were highly acceptable (54-93%), and HIVST uptake was six times greater when using digital VMs compared to distribution by community workers., Interpretation: HIVST with digital supports was deemed feasible, acceptable, preferable, and was shown to increase uptake, engage first-time testers and hard-to-reach populations, and successfully link participants to treatment. Findings pave the way for greater use of HIVST interventions with digital supports globally., Competing Interests: Dr Pant Pai reports a copyright for HIVSmart! (an open access mobile application), issued by McGill University (#1105598) in 2013, and co-owned by Grand Challenges Canada and McGill University. The other authors have no conflicts of interest to declare., (© 2021 The Author(s).)
- Published
- 2021
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17. India's COVID-19 crisis: a call for international action.
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Kuppalli K, Gala P, Cherabuddi K, Kalantri SP, Mohanan M, Mukherjee B, Pinto L, Prakash M, Pramesh CS, Rathi S, Pai NP, Yamey G, and Pai M
- Subjects
- Humans, India, Public Health, SARS-CoV-2 isolation & purification, COVID-19 prevention & control, COVID-19 transmission, COVID-19 Testing statistics & numerical data, COVID-19 Vaccines supply & distribution, Communicable Disease Control, Cooperative Behavior, Global Health
- Published
- 2021
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18. Autodépistage du VIH au Canada : vision et plan d’action.
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Pai NP and Thomas R
- Abstract
Competing Interests: Intérêts concurrents: Nitika Pant Pai a reçu une subvention du gouvernement du Canada (Grands Défis Canada) pour HIVSmart! (droit d’auteur no 1105598, Université McGill, 2013), une application et un programme numériques mondiaux libres d’accès pour l’autodépistage du VIH. Réjean Thomas a reçu des honoraires de Gilead Sciences, de Merck et de ViiV Healthcare, pour des présentations à des congrès et des participations à des conseils consultatifs.
- Published
- 2021
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19. Time for HIV self-testing in Canada: a vision and an action plan.
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Pai NP and Thomas R
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- Canada, Humans, HIV Infections diagnosis, HIV Testing, Self-Testing
- Abstract
Competing Interests: Competing interests: Nitika Pant Pai reports receiving grant funding for HIVSmart! (copyright no. 1105598, McGill University, 2013), an open access, global HIV self-testing digital application and program for HIV self-testing, from the Government of Canada (Grand Challenges Canada). Réjean Thomas reports receiving honoraria from Gilead, Merck and ViiV, for conference appearances and membership on advisory boards.
- Published
- 2020
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20. Diagnostic Infectious Diseases Testing Outside Clinics: A Global Systematic Review and Meta-analysis.
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Kpokiri EE, Marley G, Tang W, Fongwen N, Wu D, Berendes S, Ambil B, Loveday SJ, Sampath R, Walker JS, Matovu JKB, Boehme C, Pai NP, and Tucker JD
- Abstract
Background: Most people around the world do not have access to facility-based diagnostic testing, and the gap in availability of diagnostic tests is a major public health challenge. Self-testing, self-sampling, and institutional testing outside conventional clinical settings are transforming infectious disease diagnostic testing in a wide range of low- and middle-income countries (LMICs). We examined the delivery models of infectious disease diagnostic testing outside clinics to assess the impact on test uptake and linkage to care., Methods: We conducted a systematic review and meta-analysis, searching 6 databases and including original research manuscripts comparing testing outside clinics with conventional testing. The main outcomes were test uptake and linkage to care, delivery models, and adverse outcomes. Data from studies with similar interventions and outcomes within thematic areas of interest were pooled, and the quality of evidence was assessed using GRADE. This study was registered in PROSPERO (CRD42019140828).We identified 10 386 de-duplicated citations, and 76 studies were included. Data from 18 studies were pooled in meta-analyses. Studies focused on HIV (48 studies), chlamydia (8 studies), and multiple diseases (20 studies). HIV self-testing increased test uptake compared with facility-based testing (9 studies: pooled odds ratio [OR], 2.59; 95% CI, 1.06-6.29; moderate quality). Self-sampling for sexually transmitted infections increased test uptake compared with facility-based testing (7 studies: pooled OR, 1.74; 95% CI, 0.97-3.12; moderate quality). Conclusions. Testing outside of clinics increased test uptake without significant adverse outcomes. These testing approaches provide an opportunity to expand access and empower patients. Further implementation research, scale-up of effective service delivery models, and policies in LMIC settings are needed., (© The Author(s) 2020. Published by Oxford University Press on behalf of Infectious Diseases Society of America.)
- Published
- 2020
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21. Modern diagnostic technologies for HIV.
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Pai NP, Karellis A, Kim J, and Peter T
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- Early Diagnosis, Humans, Diagnostic Techniques and Procedures trends, HIV Infections diagnosis
- Abstract
Novel diagnostic technologies, including nanotechnology, microfluidics, -omics science, next-generation sequencing, genomics big data, and machine learning, could contribute to meeting the UNAIDS 95-95-95 targets to end the HIV epidemic by 2030. Novel technologies include multiplexed technologies (including biomarker-based point-of-care tests and molecular platform technologies), biomarker-based combination antibody and antigen technologies, dried-blood-spot testing, and self-testing. Although biomarker-based rapid tests, in particular antibody-based tests, have dominated HIV diagnostics since the development of the first HIV test in the mid-1980s, targets such as nucleic acids and genes are now used in nanomedicine, biosensors, microfluidics, and -omics to enable early diagnosis of HIV. These novel technologies show promise as they are associated with ease of use, high diagnostic accuracy, rapid detection, and the ability to detect HIV-specific markers. Additional clinical and implementation research is needed to generate evidence for use of novel technologies and a public health approach will be required to address clinical and operational challenges to optimise their global deployment., (Copyright © 2020 Elsevier Ltd. All rights reserved.)
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- 2020
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22. Alone But Supported: A Qualitative Study of an HIV Self-testing App in an Observational Cohort Study in South Africa.
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Janssen R, Engel N, Esmail A, Oelofse S, Krumeich A, Dheda K, and Pai NP
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- Adult, Cohort Studies, Delivery of Health Care, Female, Humans, Male, Mass Screening methods, Qualitative Research, Rural Population, Serologic Tests, South Africa, AIDS Serodiagnosis methods, Counseling, HIV Infections diagnosis, Mobile Applications, Privacy, Self Care methods, Smartphone, Telemedicine methods
- Abstract
HIV self-testing has the potential to improve test access and uptake, but concerns remain regarding counselling and support during and after HIV self-testing. We investigated an oral HIV self-testing strategy together with a mobile phone/tablet application to see if and how it provided counselling and support, and how it might impact test access. This ethnographic study was nested within an ongoing observational cohort study in Cape Town, South Africa. Qualitative data was collected from study participants and study staff using 33 semi-structured interviews, one focus group discussion, and observation notes. The app provided information and guidance while also addressing privacy concerns. The flexibility and support provided by the strategy gave participants more control in choosing whom they included during testing. Accessibility concerns included smartphone access and usability issues for older and rural users. The adaptable access and support of this strategy could aid in expanding test access in South Africa.
- Published
- 2020
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23. What do Key Stakeholders Think About HIV Self-Testing in Canada? Results from a Cross-Sectional Survey.
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Pai NP, Smallwood M, Gulati D, Lapczak N, Musten A, Gaydos C, Johnston C, Steben M, Wong T, Engel N, and Kim J
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- Adult, Canada, Cross-Sectional Studies, HIV Infections prevention & control, Humans, Male, Self Care, Surveys and Questionnaires, AIDS Serodiagnosis methods, HIV Infections diagnosis
- Abstract
Human immunodeficiency virus (HIV) self-testing presents an empowering alternative to facility-based testing for reaching undiagnosed HIV infected individuals, but is not currently available in Canada. We surveyed stakeholders (clinical providers, public health professionals, researchers) engaged in HIV testing initiatives nationwide to identify the concerns, opportunities and challenges to implementing HIV self-testing in Canada. An online cross-sectional survey was disseminated by the Canadian Institutes of Health Research Centre for REACH 2.0 National HIV & sexually transmitted and blood borne infections working group to stakeholders nationwide, with a target sample size of 200. Quantitative and qualitative data were analyzed using a mixed-methods, respondent-informed approach, to inform subsequent HIV self-testing in a country where self-testing is not yet accessible. A total of 183 responses were received. A majority (70.7%) (128/181) felt that self-testing was a necessary investment to reach the undiagnosed. 64.6% (117/181) felt that self-tests should be made available to their clients and 71.5% (128/179) of respondents agreed that self-test instructions required improvements. However, 50% (90/180) felt that self-testing will pose an economic challenge to current HIV testing models. Regardless, 21% urged for timely action and availability of HIV self-tests. Thematic analyses reflected the following concerns: (a) need for affordable self-tests, (b) need for expedited, customized, and accessible linkages to counselling, (c) concern for patients to cope with positive self-test results, (d) accuracy of self-tests to detect acute HIV and (e) liability in the context of non-disclosure. Stakeholders agreed to the provision of an option of HIV self-testing to reach the undiagnosed individuals. Concerns regarding costs and accuracy of self-tests, expedited linkages to counselling, and integration of self-test within prevailing HIV testing models, will need to be addressed before their widespread implementation.
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- 2018
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24. Rapid and point-of-care tests for the diagnosis of Trichomonas vaginalis in women and men.
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Gaydos CA, Klausner JD, Pai NP, Kelly H, Coltart C, and Peeling RW
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- Female, Humans, Male, Prevalence, Sensitivity and Specificity, Trichomonas Infections parasitology, Trichomonas vaginalis genetics, Nucleic Acid Amplification Techniques methods, Point-of-Care Testing, Trichomonas Infections diagnosis, Trichomonas vaginalis isolation & purification
- Abstract
Background: Trichomonasvaginalis (TV) is a highly prevalent parasitic infection worldwide. It is associated with many adverse reproductive health outcomes. Many infections are asymptomatic and syndromic management leads to underdetection of TV. Traditional methods of TV detection such as wet preparation are insensitive. New rapid, point-of-care (POC) tests can enhance the diagnosis of trichomoniasis., Methods: The authors reviewed the literature and discuss older POC tests for TV detection, as well as the OSOM lateral flow test, the AmpliVue test, the Solana test and the GeneXpert test as well as the limitations of wet preparation and culture for detection of TV., Results: The OSOM test is easy to perform, compared with other POC tests, and is Clinical Laboratory Improvement Amendments (CLIA)-waived, equipment-free, has sensitivities of 83%-86% compared with nucleic acid amplification tests (NAATs) and can be performed in 15 min. The AmpliVue and the Solana tests are not CLIA waived and require small pieces of equipment. They are molecular amplified assays and can be completed in <1 hour. AmpliVue demonstrated a sensitivity for vaginal swabs of 100% compared with wet preparation/culture and 90.7% compared with NAATs. Solana demonstrated a sensitivity of 98.6%-100% for vaginal swabs and 92.9%-98% for female urines, compared with wet preparation/culture. Compared with other NAATs, the sensitivity for Solana was 89.7% for swabs and 100% for urine. The GeneXpert TV test for women and men is a moderately complex test, requires a small platform and can be performed in <1 hour. The sensitivity compared with wet preparation/culture for self-collected vaginal swabs was 96.4%, 98.9% for endocervical specimens and 98.4% for female urine. For men, sensitivity for urines was excellent (97.2%). The specificity for all assays was excellent., Conclusions: Several rapid POC tests have the potential to rapidly diagnose trichomoniasis in women and one is available for detection of TV in men., Competing Interests: Competing interests: None declared., (© Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted.)
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- 2017
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25. Do digital innovations for HIV and sexually transmitted infections work? Results from a systematic review (1996-2017).
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Daher J, Vijh R, Linthwaite B, Dave S, Kim J, Dheda K, Peter T, and Pai NP
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- Antiretroviral Therapy, Highly Active, Humans, Medication Adherence, Randomized Controlled Trials as Topic, Self Care methods, Cell Phone, HIV Infections drug therapy, Sexually Transmitted Diseases drug therapy, Telemedicine methods, Text Messaging
- Abstract
Objective: Digital innovations with internet/mobile phones offer a potential cost-saving solution for overburdened health systems with high service delivery costs to improve efficiency of HIV/STI (sexually transmitted infections) control initiatives. However, their overall evidence has not yet been appraised. We evaluated the feasibility and impact of all digital innovations for all HIV/STIs., Design: Systematic review., Setting/participants: All settings/all participants., Intervention: We classified digital innovations into (1) mobile health-based (mHealth: SMS (short message service)/phone calls), (2) internet-based mobile and/or electronic health (mHealth/eHealth: social media, avatar-guided computer programs, websites, mobile applications, streamed soap opera videos) and (3) combined innovations (included both SMS/phone calls and internet-based mHealth/eHealth)., Primary and Secondary Outcome Measures: Feasibility, acceptability, impact., Methods: We searched databases MEDLINE via PubMed, Embase, Cochrane CENTRAL and Web of Science, abstracted data, explored heterogeneity, performed a random effects subgroup analysis., Results: We reviewed 99 studies, 63 (64%) were from America/Europe, 36 (36%) from Africa/Asia; 79% (79/99) were clinical trials; 84% (83/99) evaluated impact. Of innovations, mHealth based: 70% (69/99); internet based: 21% (21/99); combined: 9% (9/99).All digital innovations were highly accepted (26/31; 84%), and feasible (20/31; 65%). Regarding impacted measures, mHealth-based innovations (SMS) significantly improved antiretroviral therapy (ART) adherence (pooled OR=2.15(95%CI: 1.18 to 3.91)) and clinic attendance rates (pooled OR=1.76(95%CI: 1.28, 2.42)); internet-based innovations improved clinic attendance (6/6), ART adherence (4/4), self-care (1/1), while reducing risk (5/5); combined innovations increased clinic attendance, ART adherence, partner notifications and self-care. Confounding (68%) and selection bias (66%) were observed in observational studies and attrition bias in 31% of clinical trials., Conclusion: Digital innovations were acceptable, feasible and generated impact. A trend towards the use of internet-based and combined (internet and mobile) innovations was noted. Large scale-up studies of high quality, with new integrated impact metrics, and cost-effectiveness are needed. Findings will appeal to all stakeholders in the HIV/STI global initiatives space., Competing Interests: Competing interests: None declared., (© Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted.)
- Published
- 2017
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26. Value-added strategy models to provide quality services in senior health business.
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Yang YT, Lin NP, Su S, Chen YM, Chang YM, Handa Y, Khan HAA, and Elsa Hsu YH
- Abstract
Objective: The rapid population aging is now a global issue. The increase in the elderly population will impact the health care industry and health enterprises; various senior needs will promote the growth of the senior health industry. Most senior health studies are focused on the demand side and scarcely on supply. Our study selected quality enterprises focused on aging health and analyzed different strategies to provide excellent quality services to senior health enterprises., Design: We selected 33 quality senior health enterprises in Taiwan and investigated their excellent quality services strategies by face-to-face semi-structured in-depth interviews with CEO and managers of each enterprise in 2013., Setting: A total of 33 senior health enterprises in Taiwan., Participants: Overall, 65 CEOs and managers of 33 enterprises were interviewed individually., Intervention(s): None., Main Outcome Measure(s): Core values and vision, organization structure, quality services provided, strategies for quality services., Results: This study's results indicated four type of value-added strategy models adopted by senior enterprises to offer quality services: (i) residential care and co-residence model, (ii) home care and living in place model, (iii) community e-business experience model and (iv) virtual and physical portable device model. The common part in these four strategy models is that the services provided are elderly centered. These models offer virtual and physical integrations, and also offer total solutions for the elderly and their caregivers. Through investigation of successful strategy models for providing quality services to seniors, we identified opportunities to develop innovative service models and successful characteristics, also policy implications were summarized., Conclusions: The observations from this study will serve as a primary evidenced base for enterprises developing their senior market and, also for promoting the value co-creation possibility through dialogue between customers and those that deliver service., (© The Author 2017. Published by Oxford University Press in association with the International Society for Quality in Health Care. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com)
- Published
- 2017
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27. Point-of-Care Sexually Transmitted Infection Diagnostics: Proceedings of the STAR Sexually Transmitted Infection-Clinical Trial Group Programmatic Meeting.
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Cristillo AD, Bristow CC, Peeling R, Van Der Pol B, de Cortina SH, Dimov IK, Pai NP, Jin Shin D, Chiu RY, Klapperich C, Madhivanan P, Morris SR, and Klausner JD
- Subjects
- Congresses as Topic, Humans, Public Health methods, Point-of-Care Testing trends, Sexually Transmitted Diseases diagnosis
- Abstract
The goal of the point-of-care (POC) sexually transmitted infection (STI) Diagnostics meeting was to review the state-of-the-art research and develop recommendations for the use of POC STI diagnostics. Experts from academia, government, nonprofit, and industry discussed POC diagnostics for STIs such as Chlamydia trachomatis, human papillomavirus, Neisseria gonorrhoeae, Trichomonas vaginalis, and Treponema pallidum. Key objectives included a review of current and emerging technologies, clinical and public health benefits, POC STI diagnostics in developing countries, regulatory considerations, and future areas of development. Key points of the meeting are as follows: (i) although some rapid point-of-care tests are affordable, sensitive, specific, easy to perform, and deliverable to those who need them for select sexually transmitted infections, implementation barriers exist at the device, patient, provider, and health system levels; (ii) further investment in research and development of point-of-care tests for sexually transmitted infections is needed, and new technologies can be used to improve diagnostic testing, test uptake, and treatment; (iii) efficient deployment of self-testing in supervised (ie, pharmacies, clinics, and so on) and/or unsupervised (ie, home, offices, and so on) settings could facilitate more screening and diagnosis that will reduce the burden of sexually transmitted infections; (iv) development of novel diagnostic technologies has outpaced the generation of guidance tools and documents issued by regulatory agencies; and (v) questions regarding quality management are emerging including the mechanism by which poor-performing diagnostics are removed from the market and quality assurance of self-testing is ensured.
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- 2017
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28. Co-creating value through demand and supply integration in senior industry-observations on 33 senior enterprises in Taiwan.
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Yang YT, Iqbal U, Chen YM, Su S, Chang YM, Handa Y, Lin NP, and Hsu YH
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- Aged, Humans, Interviews as Topic, Qualitative Research, Taiwan, Geriatric Nursing, Health Resources organization & administration, Models, Organizational, Value-Based Purchasing
- Abstract
Objective: With global population aging, great business opportunities are driven by the various needs that the elderly face in everyday living. Internet development makes information spread faster, also allows elderly and their caregivers to more easily access information and actively participate in value co-creation in the services. This study aims to investigate the designs of value co-creation by the supply and demand sides of the senior industry., Design: This study investigated senior industry in Taiwan and analyzed bussiness models of 33 selected successful senior enterprises in 2013. We adopted series field observation, reviews of documentations, analysis of meeting records and in-depth interviews with 65 CEOs and managers., Setting: Thirty-three quality enterprises in senior industry., Participants: Sixty-five CEOs and managers in 33 senior enterprises., Interventions: None., Main Outcome Measures: Value co-creation design, value co-creating process., Results: We constructed a conceptual model that comprehensively describes essential aspects of value co-creation and categorized the value co-creation designs into four types applying for different business models: (i) interaction in experience spaces co-creation design, (ii) on-site interacting co-creation design, (iii) social networking platform co-creation design and (iv) empowering customers co-creation design. Through value co-creation platform design, the senior enterprises have converted the originally passive roles of the elderly and caregivers into active participants in the value co-creation process., Conclusions: The new paradigm of value co-creation designs not only promote innovative development during the interactive process, lead enterprises reveal and meet customers' needs but also increase markets and profits., (© The Author 2016. Published by Oxford University Press in association with the International Society for Quality in Health Care. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
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- 2016
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29. Remaining Questions Concerning Wearable Devices.
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Pai NP and Budd D
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- Monitoring, Ambulatory, Wearable Electronic Devices
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- 2016
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30. Observations on quality senior health business: success patterns and policy implications.
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Yang YT, Hsu YH, Chen YM, Su S, Chang YM, Iqbal U, Yujiro H, and Lin NP
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- Aged, Cross-Sectional Studies, Health Facility Administrators, Humans, Interviews as Topic, Taiwan, Health Services for the Aged organization & administration, Health Services for the Aged standards, Organizational Policy, Quality of Health Care organization & administration, Quality of Health Care standards
- Abstract
Objective: Population ageing is a global issue that affects almost every country. Most ageing researches focused on demand side and studies related to supply side were relatively scarce. This study selected quality enterprises focus on ageing health and analysed their patterns on providing quality services successfully., Design: Our study selected quality senior health enterprises and explored their success patterns through face-to-face semi-structured in-depth interviews with CEO of each enterprise in 2013., Setting: Thirty-three quality senior health enterprises in Taiwan., Participants: Thirty-three CEO's of enterprises were interviewed individually., Intervention: None., Main Outcome Measures: Core values and vision, historical development, organization structure, services/products provided, delivering channels, customer relationships and further development strategies., Results: Our results indicated success patterns for senior enterprises that there were meeting diversified lifestyles and substitutive needs for the elderly and their caregivers, providing a total solution for actual/virtual integration and flexible one-stop shopping services. We classified these enterprises by used degree of clicks-and-mortar of services and residing situation of the elderly. Industry characteristics and policy implications were summarized., Conclusions: Our observations will serve as a primary evidenced base for enterprises developing their senior market, and also for opening dialogue between customers and enterprises to facilitate valuable opportunities for co-creation between the supply and demand sides., (© The Author 2016. Published by Oxford University Press in association with the International Society for Quality in Health Care; all rights reserved.)
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- 2016
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31. Point-of-care testing in India: missed opportunities to realize the true potential of point-of-care testing programs.
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Engel N, Ganesh G, Patil M, Yellappa V, Vadnais C, Pai NP, and Pai M
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- Adult, Female, Humans, India epidemiology, Male, Point-of-Care Testing organization & administration, Qualitative Research, Referral and Consultation, Rural Population, Delayed Diagnosis prevention & control, Delivery of Health Care standards, Focus Groups methods, Point-of-Care Testing statistics & numerical data
- Abstract
Background: The core objective of any point-of-care (POC) testing program is to ensure that testing will result in an actionable management decision (e.g. referral, confirmatory test, treatment), within the same clinical encounter (e.g. POC continuum). This can but does not have to involve rapid tests. Most studies on POC testing focus on one specific test and disease in a particular healthcare setting. This paper describes the actors, technologies and practices involved in diagnosing major diseases in five Indian settings - the home, community, clinics, peripheral laboratories and hospitals. The aim was to understand how tests are used and fit into the health system and with what implications for the POC continuum., Methods: The paper reports on a qualitative study including 78 semi-structured interviews and 13 focus group discussions with doctors, nurses, patients, lab technicians, program officers and informal providers, conducted between January and June 2013 in rural and urban Karnataka, South India. Actors, diseases, tests and diagnostic processes were mapped for each of the five settings and analyzed with regard to whether and how POC continuums are being ensured., Results: Successful POC testing hardly occurs in any of the five settings. In hospitals and public clinics, most of the rapid tests are used in laboratories where either the single patient encounter advantage is not realized or the rapidity is compromised. Lab-based testing in a context of manpower and equipment shortages leads to delays. In smaller peripheral laboratories and private clinics with shorter turn-around-times, rapid tests are unavailable or too costly. Here providers find alternative measures to ensure the POC continuum. In the home setting, patients who can afford a test are not/do not feel empowered to use those devices., Conclusion: These results show that there is much diagnostic delay that deters the POC continuum. Existing rapid tests are currently not translated into treatment decisions rapidly or are not available where they could ensure shorter turn-around times, thus undermining their full potential. To ensure the success of POC testing programs, test developers, decision-makers and funders need to account for such ground realities and overcome barriers to POC testing programs.
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- 2015
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32. Barriers to Implementation of Rapid and Point-of-Care Tests for Human Immunodeficiency Virus Infection: Findings From a Systematic Review (1996-2014).
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Pai NP, Wilkinson S, Deli-Houssein R, Vijh R, Vadnais C, Behlim T, Steben M, Engel N, and Wong T
- Abstract
Implementation of human immunodeficiency virus rapid and point-of-care tests (RDT/POCT) is understood to be impeded by many different factors that operate at 4 main levels-test devices, patients, providers, and health systems-yet a knowledge gap exists of how they act and interact to impede implementation. To fill this gap, and with a view to improving the quality of implementation, we conducted a systematic review., Methods: Five databases were searched, 16,672 citations were retrieved, and data were abstracted on 132 studies by 2 reviewers., Findings: Across 3 levels (ie, patients, providers, and health systems), a majority (59%, 112/190) of the 190 barriers were related to the integration of RDT/POCT, followed by test-device-related concern (ie, accuracy) at 41% (78/190). At the patient level, a lack of awareness about tests (15/54, 28%) and time taken to test (12/54, 22%) dominated. At the provider and health system levels, integration of RDT/POCT in clinical workflows (7/24, 29%) and within hospitals (21/34, 62%) prevailed. Accuracy (57/78, 73%) was dominant only at the device level., Interpretation: Integration barriers dominated the findings followed by test accuracy. Although accuracy has improved during the years, an ideal implementation could be achieved by improving the integration of RDT/POCT within clinics, hospitals, and health systems, with clear protocols, training on quality assurance and control, clear communication, and linkage plans to improve health outcomes of patients. This finding is pertinent for a future envisioned implementation and global scale-up of RDT/POCT-based initiatives.
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- 2015
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33. Strategies to increase the demand for childhood vaccination in low- and middle-income countries: a systematic review and meta-analysis.
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Johri M, Pérez MC, Arsenault C, Sharma JK, Pai NP, Pahwa S, and Sylvestre MP
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- Bias, Child, Preschool, Communicable Disease Control methods, Developing Countries, Female, Health Promotion statistics & numerical data, Humans, Infant, Male, Poverty, Randomized Controlled Trials as Topic, Health Promotion methods, Immunization statistics & numerical data, Vaccination statistics & numerical data
- Abstract
Objective: To investigate which strategies to increase demand for vaccination are effective in increasing child vaccine coverage in low- and middle-income countries., Methods: We searched MEDLINE, EMBASE, Cochrane library, POPLINE, ECONLIT, CINAHL, LILACS, BDSP, Web of Science and Scopus databases for relevant studies, published in English, French, German, Hindi, Portuguese and Spanish up to 25 March 2014. We included studies of interventions intended to increase demand for routine childhood vaccination. Studies were eligible if conducted in low- and middle-income countries and employing a randomized controlled trial, non-randomized controlled trial, controlled before-and-after or interrupted time series design. We estimated risk of bias using Cochrane collaboration guidelines and performed random-effects meta-analysis., Findings: We identified 11 studies comprising four randomized controlled trials, six cluster randomized controlled trials and one controlled before-and-after study published in English between 1996 and 2013. Participants were generally parents of young children exposed to an eligible intervention. Six studies demonstrated low risk of bias and five studies had moderate to high risk of bias. We conducted a pooled analysis considering all 11 studies, with data from 11,512 participants. Demand-side interventions were associated with significantly higher receipt of vaccines, relative risk (RR): 1.30, (95% confidence interval, CI: 1.17-1.44). Subgroup analyses also demonstrated significant effects of seven education and knowledge translation studies, RR: 1.40 (95% CI: 1.20-1.63) and of four studies which used incentives, RR: 1.28 (95% CI: 1.12-1.45)., Conclusion: Demand-side interventions lead to significant gains in child vaccination coverage in low- and middle-income countries. Educational approaches and use of incentives were both effective strategies.
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- 2015
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34. Compounding diagnostic delays: a qualitative study of point-of-care testing in South Africa.
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Engel N, Davids M, Blankvoort N, Pai NP, Dheda K, and Pai M
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- Diabetes Mellitus diagnosis, Focus Groups, Health Personnel, Humans, Hypertension diagnosis, Infections diagnosis, Interviews as Topic, Qualitative Research, South Africa, Specimen Handling, Transportation, Ambulatory Care Facilities, Delayed Diagnosis, Hospitals, Point-of-Care Systems
- Abstract
Objectives: Successful point-of-care (POC) testing (completion of test-and-treat cycle in one patient encounter) has immense potential to reduce diagnostic and treatment delays, and improve patient and public health outcomes. We explored what tests are done and how in public/private, rural/urban hospitals and clinics in South Africa and whether they can ensure successful POC testing., Methods: This qualitative research study examined POC testing across major diseases in Cape Town, Durban and Eastern Cape. We conducted 101 semi-structured interviews and seven focus group discussions with doctors, nurses, community health workers, patients, laboratory technicians, policymakers, hospital managers and diagnostic manufacturers., Results: In South Africa, diagnostics are characterised by a centralised system. Most tests conducted on the spot can be made to work successfully as POC tests. The majority of public/private clinics and smaller hospitals send samples via couriers to centralised laboratories and retrieve results the same way, via internet, fax or phone. The main challenge to POC testing lies in transporting samples and results, while delays risk patient loss from diagnostic/treatment pathways. Strategies to deal with associated delays create new problems, such as artificially prolonged turnaround times, strains on human resources and quality of testing, compounding additional diagnostic and treatment delays., Conclusions: For POC testing to succeed, particular characteristics of diagnostic ecosystems and adaptations of professional practices to overcome associated challenges must be taken into account., (© 2014 John Wiley & Sons Ltd.)
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- 2015
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35. Multiplexed point-of-care assays for HIV and co-infections for resource constrained settings: a perspective.
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Pai NP
- Subjects
- Communicable Diseases diagnosis, Developing Countries economics, Humans, Coinfection diagnosis, HIV Infections diagnosis, Molecular Diagnostic Techniques economics, Point-of-Care Systems
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- 2015
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36. Will a quadruple multiplexed point-of-care screening strategy for HIV-related co-infections be feasible and impact detection of new co-infections in at-risk populations? Results from cross-sectional studies.
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Pai NP, Dhurat R, Potter M, Behlim T, Landry G, Vadnais C, Rodrigues C, Joseph L, and Shetty A
- Subjects
- Adult, Canada epidemiology, Coinfection epidemiology, Cross-Sectional Studies, Female, HIV, HIV Infections complications, HIV Infections epidemiology, Hepatitis B complications, Hepatitis B epidemiology, Hepatitis C complications, Hepatitis C epidemiology, Humans, Incidence, India epidemiology, Male, Middle Aged, Sensitivity and Specificity, Substance Abuse, Intravenous complications, Syphilis complications, Syphilis epidemiology, Young Adult, Coinfection diagnosis, HIV Infections diagnosis, Hepatitis B diagnosis, Hepatitis C diagnosis, Mass Screening methods, Syphilis diagnosis
- Abstract
Objectives: Multiplexed point-of-care (POC) devices can rapidly screen for HIV-related co-infections (eg, hepatitis C (HCV), hepatitis B (HBV), syphilis) in one patient visit, but global evidence for this approach remains limited. This study aimed to evaluate a multiplex POC testing strategy to expedite screening for HIV-related co-infections in at-risk populations., Methods: A multiplex strategy was developed with two subsequent versions of an investigational device Miriad. It was evaluated in two non-comparable settings and populations in two countries for feasibility of conduct, detection of new infections, preference and accuracy. Version 1 was evaluated in 375 sexually transmitted disease clinic attendees in Mumbai, India; version 2 was evaluated in 119 injection drug users in Montreal, Canada., Results: Feasibility (completion rate) of the multiplex strategy was high (86.1% Mumbai; 92.4% Montreal). A total of 170 new infections were detected in Mumbai (56 HIV, 75 HBV, 37 syphilis, 2 HCV) versus 2 in Montreal. Preference was 60% in Mumbai and 97% in Montreal. Miriad version 1 specificities were high: HIV 99.7% (98.3% to 100%), HBV 99.3% (97.6% to 99.9%), HCV 99.7% (98.5% to 99.9%), syphilis 85.2% (80.9% to 88.8%); sensitivities were as follows: HIV 100% (94.8% to 100%), HBV 13.3% (6.6% to 23.2%), HCV 50% (1.3% to 98.7%), syphilis 86.1% (70.5% to 95.3%). With version 2, specificities improved: HIV 100% (97.2% to 100%), HBV 100% (97.3% to 100%), HCV 85.3% (73.8% to 93.0%), syphilis 98.1% (93.3% to 99.8%); sensitivities were: HIV 100% (47.3% to 100%), HCV 80.4% (66.1% to 90.6%), syphilis 100% (22.4% to 100%)., Conclusions: A quad multiplex POC strategy for HIV and co-infections was feasible to operationalise and preferred by patients in both settings. Many new infections were identified in Mumbai and accuracy improved with version 2 of the assay. Such a strategy will help expedite screening for co-infections, particularly where baseline screening is low. These findings are valuable to practitioners, researchers, policymakers and funders involved in initiatives for all four diseases with implications for scale-up., (Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.)
- Published
- 2014
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37. HIV self-testing strategy: the middle road.
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Pai NP and Dheda K
- Subjects
- Diagnostic Self Evaluation, Humans, Reagent Kits, Diagnostic economics, Reproducibility of Results, HIV Infections diagnosis
- Published
- 2013
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38. Rapid hepatitis C tests: better than the gold standard?
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Pai NP, Sollis K, and Peeling RW
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- Coinfection diagnosis, HIV Infections diagnosis, Health Services Accessibility, Humans, Hepatitis C diagnosis, Point-of-Care Systems standards, Quality of Health Care
- Published
- 2013
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39. An HIV1/2 point of care test on sputum for screening TB/HIV co-infection in Central India - Will it work?
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Desikan P, De S, Pai NP, Mishra PK, Kumar K, Panwalkar N, Verma M, Hasan ZU, and Maudar KK
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- Adolescent, Adult, Aged, Cross-Sectional Studies, Enzyme-Linked Immunosorbent Assay, Female, HIV Infections blood, HIV Infections complications, Humans, India, Male, Middle Aged, Point-of-Care Systems, Sensitivity and Specificity, Tuberculosis, Pulmonary blood, Tuberculosis, Pulmonary complications, Young Adult, HIV Infections diagnosis, HIV-1 isolation & purification, HIV-2 isolation & purification, Mass Screening methods, Sputum chemistry
- Abstract
Objective: To determine whether the OraQuick® HIV-1/2 Assay (OraSure Technologies, Inc., Bethlehem, PA, USA) in sputum is a valid tool for HIV surveillance among TB patients., Methods: A cross sectional study was carried out on sputa of patients diagnosed with tuberculosis. Sputa were tested for antibodies to HIV using OraQuick® HIV-1/2 Assay (OraSure Technologies, Inc., Bethlehem, PA, USA). The results were compared with results of serum ELISA., Results: Compared to serum ELISA, the OraQuick® HIV-1/2 Assay in sputum specimens reported 90% sensitivity (9/10) and 100% specificity (307/307), with a positive predictive value of 100% (95%CI: 66.37%-100.00%) and a negative predictive value of 99.68% (95%CI: 98.20%-99.99%)., Conclusions: This testing method may provide a useful strategy for conducting HIV surveillance in possible co-infected TB patients at peripheral centres. Since there is no investment on infrastructure, it may be possible for paramedical health professionals to carry out the test, particularly in areas with low HIV endemicity., (Copyright © 2013 Hainan Medical College. Published by Elsevier B.V. All rights reserved.)
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- 2013
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40. Are Treponema pallidum specific rapid and point-of-care tests for syphilis accurate enough for screening in resource limited settings? Evidence from a meta-analysis.
- Author
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Jafari Y, Peeling RW, Shivkumar S, Claessens C, Joseph L, and Pai NP
- Subjects
- Adult, Databases, Factual, Female, Health Resources, Humans, Male, Mass Screening, Reproducibility of Results, Sensitivity and Specificity, Sex Workers, Syphilis epidemiology, Point-of-Care Systems standards, Syphilis diagnosis, Treponema pallidum
- Abstract
Background: Rapid and point-of-care (POC) tests for syphilis are an invaluable screening tool, yet inadequate evaluation of their diagnostic accuracy against best reference standards limits their widespread global uptake. To fill this gap, a systematic review and meta-analysis was conducted to evaluate the sensitivity and specificity of rapid and POC tests in blood and serum samples against Treponema pallidum (TP) specific reference standards., Methods: Five electronic databases (1980-2012) were searched, data was extracted from 33 articles, and Bayesian hierarchical models were fit., Results: In serum samples, against a TP specific reference standard point estimates with 95% credible intervals (CrI) for the sensitivities of popular tests were: i) Determine, 90.04% (80.45, 95.21), ii) SD Bioline, 87.06% (75.67, 94.50), iii) VisiTect, 85.13% (72.83, 92.57), and iv) Syphicheck, 74.48% (56.85, 88.44), while specificities were: i) Syphicheck, 99.14% (96.37, 100), ii) Visitect, 96.45% (91.92, 99.29), iii) SD Bioline, 95.85% (89.89, 99.53), and iv) Determine, 94.15% (89.26, 97.66). In whole blood samples, sensitivities were: i) Determine, 86.32% (77.26, 91.70), ii) SD Bioline, 84.50% (78.81, 92.61), iii) Syphicheck, 74.47% (63.94, 82.13), and iv) VisiTect, 74.26% (53.62, 83.68), while specificities were: i) Syphicheck, 99.58% (98.91, 99.96), ii) VisiTect, 99.43% (98.22, 99.98), iii) SD Bioline, 97.95%(92.54, 99.33), and iv) Determine, 95.85% (92.42, 97.74)., Conclusions: Rapid and POC treponemal tests reported sensitivity and specificity estimates comparable to laboratory-based treponemal tests. In resource limited settings, where access to screening is limited and where risk of patients lost to follow up is high, the introduction of these tests has already been shown to improve access to screening and treatment to prevent stillbirths and neonatal mortality due to congenital syphilis. Based on the evidence, it is concluded that rapid and POC tests are useful in resource limited settings with poor access to laboratories or screening for syphilis.
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- 2013
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41. Incidence of acute hepatitis C virus infection among men who have sex with men with and without HIV infection: a systematic review.
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Yaphe S, Bozinoff N, Kyle R, Shivkumar S, Pai NP, and Klein M
- Subjects
- Humans, Incidence, Male, Risk Assessment, Coinfection epidemiology, HIV Infections complications, Hepatitis C epidemiology, Homosexuality, Male
- Abstract
Background: A recent increase in reports of acute hepatitis C virus infection (HCV) in HIV-infected and HIV-uninfected men who have sex with men (MSM), with the sole risk factor being sexual exposure, has led to routine screening and targeted prevention requests for this population; current evidence for this necessity is unclear., Objective: A systematic review was conducted to assess the incidence of HCV infection among studies conducted in HIV-positive and/or HIV-negative MSM to explore the implications for routine HCV screening., Data Sources: The MEDLINE, EMBASE and BIOSYS databases were searched for the period January 2000 to May 2012, yielding 21 studies. Six conferences were hand-searched for the same period yielding four abstracts., Study Selection: Only studies in English presenting incidence rates of HCV and specifying HIV status were included., Data Abstraction: Data were abstracted by two authors using predefined data fields. The STROBE checklist was used to assess study quality., Data Synthesis: Data were divided into HIV-negative MSM and HIV-positive MSM subgroups, and HCV incidence density measurements were pooled. Using a DerSimonian-Laird random effects model, pooled incidence was 1.48/1000 person-years (95% CI 0.75 to 2.21) for the HIV-negative MSM subgroup. The HIV-positive MSM subgroup was at 4.1 times higher risk of acquiring HCV at 6.08/1000 person-years (95% CI 5.18 to 6.99). Studies directly comparing subgroups estimated a pooled risk difference of 3.45/1000 person-years (95% CI 1.63 to 5.27)., Conclusion: HIV-positive MSM were at higher risk for acute HCV infection than HIV-negative MSM, substantiating the need for routine screening initiatives. Insufficient evidence exists to warrant routine screening of HIV-negative MSM, except on a case-by-case basis, such as high-risk sexual behaviour.
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- 2012
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42. Rapid point-of-care first-line screening tests for hepatitis B infection: a meta-analysis of diagnostic accuracy (1980-2010).
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Shivkumar S, Peeling R, Jafari Y, Joseph L, and Pai NP
- Subjects
- Bayes Theorem, Humans, Point-of-Care Systems, Sensitivity and Specificity, Hepatitis B diagnosis, Hepatitis B Surface Antigens analysis
- Abstract
Objectives: Three-hundred fifty million people worldwide are chronically infected with Hepatitis B, with four million acute infections annually. With infection concentrated in hard-to-reach populations and low resource settings, rapid point-of-care (POC) tests offer an efficient screening alternative to laboratory tests. We conducted a meta-analysis to evaluate accuracy of rapid POC tests screening for Hepatitis B., Methods: Two reviewers searched four databases, critiqued quality. A hierarchical Bayesian meta-analysis correcting for imperfect reference standards was used. Based on components of the antigen-antibody response, 17 studies were stratified into three subgroups: (i) Hepatitis B surface antigen (HBsAg) tests; (ii) anti-HBsAg tests, and (iii) HBs+eAg tests. Further, we pooled estimates on individual tests with sufficient data., Results: In subgroup 1, the pooled sensitivity (Sn) was 94.76% (95% credible interval (CrI): 90.08-98.23%) and specificity (Sp) was 99.54% (95% CrI: 99.03-99.95%). The Determine test reported a pooled Sn 98.2% (95% CrI: 94.7, 99.9) and Sp 99.9% (95% CrI: 99.3, 100); in subgroup 2, Sn 93.2% (95% CrI: 85.1, 98.5), Sp 93.1% (95% CrI: 81.9, 99.9); and in subgroup 3, the Binax test showed Sn 95.5% (95% CrI: 88.9, 99.4), Sp 99.8% (95% CrI: 99.3, 100)., Conclusions: HBsAg tests, including Determine, and the HBs+eAg test, Binax showed high accuracy. Improvements in sensitivity of antibody-based tests will enhance their potential for global first-line screening.
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- 2012
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43. Point-of-care testing for infectious diseases: diversity, complexity, and barriers in low- and middle-income countries.
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Pai NP, Vadnais C, Denkinger C, Engel N, and Pai M
- Subjects
- Developing Countries, Female, Humans, Male, Communicable Diseases diagnosis, Point-of-Care Systems
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- 2012
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44. CD4 T cell nadir independently predicts the magnitude of the HIV reservoir after prolonged suppressive antiretroviral therapy.
- Author
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Boulassel MR, Chomont N, Pai NP, Gilmore N, Sékaly RP, and Routy JP
- Subjects
- Adult, CD4 Lymphocyte Count, Female, HIV Infections immunology, HIV Infections virology, HIV Protease Inhibitors pharmacology, HIV-1 immunology, HIV-1 pathogenicity, Humans, Male, Middle Aged, RNA, Viral blood, Regression Analysis, Reverse Transcriptase Inhibitors pharmacology, Viral Load, Viremia drug therapy, Viremia genetics, Viremia virology, Virus Integration, CD4-Positive T-Lymphocytes virology, Disease Reservoirs virology, HIV Infections drug therapy, HIV-1 genetics
- Abstract
Background: The level of HIV-1 integrated DNA in CD4 T cells was reported to predict the evolution of untreated HIV-1 infection independently of CD4 cell counts or plasma HIV-1 RNA levels. However, the relevance of reservoir level while on efficient antiretroviral therapy (ART) is still unknown., Objectives: To evaluate factors that may contribute to the establishment and maintenance of HIV-1 reservoir size in ART-treated HIV-1-infected adults with complete suppression of viremia., Study Design: 35 subjects receiving ART with plasma HIV-1 RNA below the limit of detection for an average duration of 3.2 years were studied. A highly sensitive PCR was used to assess HIV-1 integrated DNA levels in sorted CD4 T cells., Results: The mean HIV-1 integrated DNA was 300±7copies/10(6) CD4 cells (range 10-1408). In univariate analysis, the levels of HIV-1 proviral DNA appeared to be independent of duration of HIV-1-infection, duration on ART, time since HIV-1 viral load was undetectable, delay between HIV-1 infection and starting ART, or viral load before starting ART. Conversely, CD4 T cell nadir, CD4/CD8 ratio and, to lesser degree, CD4 T cell counts were inversely associated with HIV-1 proviral DNA levels. In multivariate analysis, only CD4 T cell nadir significantly predicted levels of HIV-1 proviral DNA (P=0.025)., Conclusions: CD4 T cell nadir strongly predicted reservoir size independently of other factors in HIV-1-infected adults with complete suppression of viremia. Collectively, these results indicate that the extent of CD4 T cell depletion before ART drives the size of the viral reservoir after prolonged therapy., (Copyright © 2011 Elsevier B.V. All rights reserved.)
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- 2012
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45. Point-of-care diagnostics for HIV and tuberculosis: landscape, pipeline, and unmet needs.
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Pai NP and Pai M
- Subjects
- Humans, HIV Infections diagnosis, Point-of-Care Systems, Tuberculosis diagnosis
- Abstract
Early diagnosis and rapid initiation of treatment remains a key strategy to control both HIV and tuberculosis (TB). However, HIV and TB control programs have had completely contrasting successes, especially with the development and deployment of point-of-care (POC) diagnostics. Clinicians, researchers, and public health staff who work at the frontlines of HIV care and control have had access to an outstanding array of POC diagnostics at their disposal, including those used for screening, initial diagnosis, staging, treatment monitoring, and early infant diagnosis. The field has also advanced to consider over-the-counter, self-testing options for HIV and the use of multiplexed platforms that allow for simultaneous detection of infections associated with HIV. In sharp contrast to HIV, suboptimal and delayed diagnosis of TB has perpetuated the epidemic in many high-burden countries. Although the TB diagnostics pipeline is substantially better today than it was even five years ago, absence of a simple POC test continues to be a gaping hole in the pipeline. In this review, we compare the POC diagnostics landscape and pipelines for these two important infectious diseases, and highlight gaps and unmet needs.
- Published
- 2012
46. Cost-effectiveness of drug-eluting stents in patients with stable coronary artery disease.
- Author
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Hung CS, Cheng CL, Chao CL, Kao HL, Chen MF, and Lin NP
- Subjects
- Aged, Aged, 80 and over, Angioplasty, Balloon, Coronary, Blood Vessel Prosthesis Implantation, Coronary Artery Disease economics, Coronary Restenosis etiology, Drug-Eluting Stents adverse effects, Female, Health Care Costs, Humans, Immunosuppressive Agents economics, Male, Middle Aged, Prosthesis Design, Retrospective Studies, Taiwan, Treatment Outcome, Coronary Artery Disease therapy, Coronary Restenosis prevention & control, Cost-Benefit Analysis, Drug-Eluting Stents economics, Immunosuppressive Agents administration & dosage
- Abstract
Background/purpose: Drug-eluting stents (DESs) have been shown to reduce in-stent restenosis and target vessel revascularization (TVR) in large clinical trials. We conducted this study to elucidate the differences in the cost and clinical outcome of DESs and bare metal stents (BMSs)., Methods: We retrospectively analyzed the clinical data and costs of patients with stable angina treated with coronary stents from September 2003 to January 2005 at the National Taiwan University Hospital, Taipei, Taiwan., Results: We enrolled 186 patients treated with DESs and 194 patients treated with BMSs. The use of DESs is associated with a lower rate of TVR compared with that with BMSs (12%vs. 22%, p = 0.011). Compared with the BMS group, the overall costs were significantly higher in the DES group (NT$352,495 ± 140,408 vs. NT$298,947 ± 131,289, p<0.001). The incremental cost to avoid one TVR at 2 years was NT$546,444 (95% confidence interval: NT$151,071-2,565,793)., Conclusion: The use of DESs reduces the rate of TVR at 2 years after intervention, but is probably not cost-effective compared with BMSs in patients with stable coronary artery disease., (Copyright © 2011 Formosan Medical Association & Elsevier. Published by Elsevier B.V. All rights reserved.)
- Published
- 2011
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47. The impact of antiretroviral therapy in a cohort of HIV infected patients going in and out of the San Francisco county jail.
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Pai NP, Estes M, Moodie EE, Reingold AL, and Tulsky JP
- Subjects
- Adult, CD4 Lymphocyte Count, CD4-Positive T-Lymphocytes metabolism, Female, HIV Infections blood, HIV Infections epidemiology, HIV-1 metabolism, Humans, Male, Medication Adherence, Prisons, Retrospective Studies, San Francisco, Treatment Outcome, Viral Load, Anti-Retroviral Agents therapeutic use, HIV Infections drug therapy
- Abstract
Background: Jails are an important venue of HIV care and a place for identification, treatment and referral for care. HIV infected inmates in the San Francisco County jail are offered antiretroviral treatment (ART), which many take only while in jail. We evaluated the effect of ART administration in a cohort of jail inmates going in and out of jail over a nine year period., Methodology/principal Findings: In this retrospective study, we examined inmates with HIV going in and out of jail. Inmates were categorized by patterns of ART use: continuous ART - ART both in and out of jail, intermittent ART - ART only in jail; never on ART - eligible by national guidelines, but refused ART. CD4 and HIV viral load (VL) were compared over time in these groups. Over a 9 year period, 512 inmates were studied: 388 (76%) on intermittent ART, 79 (15%) on continuous ART and 45(9%) never-on ART. In a linear mixed model analysis, inmates on intermittent ART were 1.43; 95%CI (1.03, 1.99) times and those never on ART were 2.89; 95%CI (1.71, 4.87) times more likely to have higher VL than inmates on continuous ART. Furthermore, Inmates on intermittent ART and never-on ART lost 1.60; 95%CI (1.06, 2.13) and 1.97; 95%CI (0.96, 3.00) more CD4 cells per month, respectively, compared to continuously treated inmates. The continuous ART inmates gained 0.67CD4 cells/month., Conclusions/significance: Continuous ART therapy in jail inmate's benefits CD4 cell counts and control of VL especially compared to those who never took ART. Although jail inmates on intermittent ART were more likely to lose CD4 cells and experience higher VL over time than those on continuous ART, CD4 cell loss was slower in these inmates as compared to inmates never on ART. Further studies are needed to evaluate whether or not intermittent ART provides some benefit in outcome if continuous ART is not possible or likely.
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- 2009
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48. Differences in resistance mutations among HIV-1 non-subtype B infections: a systematic review of evidence (1996-2008).
- Author
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Martinez-Cajas JL, Pai NP, Klein MB, and Wainberg MA
- Abstract
Ninety percent of HIV-1-infected people worldwide harbour non-subtype B variants of HIV-1. Yet knowledge of resistance mutations in non-B HIV-1 and their clinical relevance is limited. Although a few reviews, editorials and perspectives have been published alluding to this lack of data among non-B subtypes, no systematic review has been performed to date.With this in mind, we conducted a systematic review (1996-2008) of all published studies performed on the basis of non-subtype B HIV-1 infections treated with antiretroviral drugs that reported genotype resistance tests. Using an established search string, 50 studies were deemed relevant for this review.These studies reported genotyping data from non-B HIV-1 infections that had been treated with either reverse transcriptase inhibitors or protease inhibitors. While most major resistance mutations in subtype B were also found in non-B subtypes, a few novel mutations in non-B subtypes were recognized. The main differences are reflected in the discoveries that: (i) the non-nucleoside reverse transcriptase inhibitor resistance mutation, V106M, has been seen in subtype C and CRF01_AE, but not in subtype B, (ii) the protease inhibitor mutations L89I/V have been reported in C, F and G subtypes, but not in B, (iii) a nelfinavir selected non-D30N containing pathway predominated in CRF01_AE and CRF02_AG, while the emergence of D30N is favoured in subtypes B and D, (iv) studies on thymidine analog-treated subtype C infections from South Africa, Botswana and Malawi have reported a higher frequency of the K65R resistance mutation than that typically seen with subtype B.Additionally, some substitutions that seem to impact non-B viruses differentially are: reverse transcriptase mutations G196E, A98G/S, and V75M; and protease mutations M89I/V and I93L.Polymorphisms that were common in non-B subtypes and that may contribute to resistance tended to persist or become more frequent after drug exposure. Some, but not all, are recognized as minor resistance mutations in B subtypes. These observed differences in resistance pathways may impact cross-resistance and the selection of second-line regimens with protease inhibitors. Attention to newer drug combinations, as well as baseline genotyping of non-B isolates, in well-designed longitudinal studies with long duration of follow up are needed.
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- 2009
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49. Profile of adults seeking voluntary HIV testing and counseling in rural Central India: results from a hospital-based study.
- Author
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Pai NP, Joshi R, Moodie EE, Taksande B, Kalantri SP, Pai M, Tulsky JP, and Reingold A
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- Adolescent, Adult, Aged, Aged, 80 and over, Epidemiologic Methods, Female, HIV Infections epidemiology, HIV Infections psychology, Humans, India epidemiology, Male, Middle Aged, Rural Health, Socioeconomic Factors, Spouses psychology, Spouses statistics & numerical data, Young Adult, AIDS Serodiagnosis, HIV Infections diagnosis, Sexual Behavior psychology
- Abstract
Rural India has an undetected load of HIV-positive individuals. Few rural adults present for HIV testing and counseling due to stigma, discrimination, and fear of social ostracization. In this rural hospital clinic-based study, we document profiles of rural adults seeking voluntary testing and counseling, and analyze correlates of HIV seropositivity. This cross-sectional study was conducted in 450 participants presenting to the outpatient clinics of Mahatma Gandhi Institute of Medical Sciences, Sevagram, Central India. After informed consent, pre- and post-test counseling, HIV testing, and face-to-face interviews were conducted. Data were collected using a structured questionnaire. The median age of the 450 study participants was 34 years (range 18-88 years); the majority (74%) was married. The overall proportion of HIV seropositivity was 32% [95% CI 28%, 37%]. The proportions of HIV seropositivity in married women, married men, and single men were 41%, 37%, 18%, respectively. No single woman was found seropositive in the study. Very few married women were aware of their husbands' HIV status. In a multivariate analysis, correlates of HIV seropositivity in men were: age 30-39 years, being married, having sex with multiple partners, use of alcohol before sex, and testing positive for HIV in the past. In married women, the only predictor of seropositivity was being married. Although limited by the non-random nature of the sampling method, this pilot study is unique in that it is the first from this rural region of Central India. It provides baseline data on marginalized, largely unstudied populations that may aid in designing probabilistic community-based surveys in this neglected population.
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- 2009
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50. Rapid testing at labor and delivery to prevent mother-to-child HIV transmission in developing settings: issues and challenges.
- Author
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Pai NP and Klein MB
- Subjects
- Counseling, Developing Countries, Female, Health Services Accessibility, Humans, Patient Education as Topic, Pregnancy, Socioeconomic Factors, AIDS Serodiagnosis methods, HIV Infections diagnosis, HIV Infections prevention & control, HIV Infections psychology, HIV Infections transmission, Health Knowledge, Attitudes, Practice, Infectious Disease Transmission, Vertical prevention & control, Patient Acceptance of Health Care
- Abstract
Worldwide, approximately 2.5 million children (95% CI: 2.2-2.6) are living with HIV infection. In 2007 alone, approximately 420,000 children (95%CI: 350,000-540,000) were newly infected with HIV - a vast majority of these infections were acquired through maternal-fetal transmission. Many of these infections could have been reduced by timely diagnosis and the delivery of interventions aimed at preventing mother-to-child HIV transmission. This perspective examines the attitudes preventing women from accessing HIV testing early on during pregnancy and the issues and challenges that remain in the institutionalization of interventions to prevent mother-to-child HIV transmission at labor and delivery. Socio-cultural and economic factors prevent women from accessing testing at an opportune time during pregnancy. In addition, a lack of adequate infrastructure often prevents timely delivery of interventions to those who access testing at the last minute (i.e., during labor and delivery). In the wake of a pediatric HIV epidemic and the need for lifelong provision of antiretroviral therapy to infected children, a simple strategy for provision of round-the-clock rapid testing and counseling services in the labor rooms may be cost saving to the healthcare systems worldwide.
- Published
- 2009
- Full Text
- View/download PDF
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