29 results on '"Kracalik I"'
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2. Human Brucellosis Trends: Re‐emergence and Prospects for Control Using a One Health Approach in Azerbaijan (1983–2009)
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Kracalik, I. T., primary, Abdullayev, R., additional, Asadov, K., additional, Ismayilova, R., additional, Baghirova, M., additional, Ustun, N., additional, Shikhiyev, M., additional, Talibzade, A., additional, and Blackburn, J. K., additional
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- 2015
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3. Human Brucellosis Trends: Re-emergence and Prospects for Control Using a One Health Approach in Azerbaijan (1983-2009).
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Kracalik, I. T., Abdullayev, R., Asadov, K., Ismayilova, R., Baghirova, M., Ustun, N., Shikhiyev, M., Talibzade, A., and Blackburn, J. K.
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BRUCELLOSIS , *BRUCELLOSIS vaccines , *ZOONOSES , *HEALTH , *MEDICAL economics , *DISEASE incidence , *SPATIAL analysis (Statistics) , *PREVENTION - Abstract
Brucellosis is one of the most common and widely spread zoonotic diseases in the world. Control of the disease in humans is dependent upon limiting the infection in animals through surveillance and vaccination. Given the dramatic economic and political changes that have taken place in the former Soviet Union, which have limited control, evaluating the status of human brucellosis in former Soviet states is crucial. We assessed annual spatial and temporal trends in the epidemiology of human brucellosis in Azerbaijan, 1983-2009, in conjunction with data from a livestock surveillance and control programme (2002-2009). To analyse trends, we used a combination of segmented regression and spatial analysis. From 1983 to 2009, a total of 11 233 cases of human brucellosis were reported. Up to the mid-1990s, the incidence of human brucellosis showed a pattern of re-emergence, increasing by 25% annually, on average. Following Soviet governance, the incidence rates peaked, increasing by 1.8% annually, on average, and subsequently decreasing by 5% annually, on average, during the period 2002-2009. Despite recent national declines in human incidence, we identified geographic changes in the case distribution characterized by a geographic expansion and an increasing incidence among districts clustered in the south-east, compared to a decrease of elsewhere in the country. Males were consistently, disproportionately afflicted (71%) and incidence was highest in the 15 to 19 age group (18.1 cases/100 000). During the period 2002-2009, >10 million small ruminants were vaccinated with Rev1. Our findings highlight the improving prospects for human brucellosis control following livestock vaccination; however, the disease appears to be re-emerging in south-eastern Azerbaijan. Sustained one health measures are needed to address changing patterns of brucellosis in Azerbaijan and elsewhere in the former Soviet Union. [ABSTRACT FROM AUTHOR]
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- 2016
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4. The status of zoonoses in Azerbaijan during Soviet and post-Soviet governance: analyzing space-time patterns of human brucellosis and anthrax
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Ismayilova, R., primary, Kracalik, I., additional, Abdullayev, R., additional, Ustun, N., additional, Talibzade, A., additional, and Blackburn, J., additional
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- 2012
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5. Analyzing the spatial and temporal distribution of human brucellosis in Azerbaijan (1995 - 2009) using spatial and spatio-temporal statistics
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Abdullayev Rakif, Kracalik Ian, Ismayilova Rita, Ustun Narmin, Talibzade Ayden, and Blackburn Jason K
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Brucellosis ,Spatio-temporal analysis ,Azerbaijan ,Former Soviet Union ,Serology ,Infectious and parasitic diseases ,RC109-216 - Abstract
Abstract Background Human brucellosis represents a significant burden to public and veterinary health globally, including the republic of Azerbaijan. The purpose of this study was to examine and describe the spatial and temporal aspects of the epidemiology of human brucellosis in Azerbaijan from 1995 to 2009. Methods A Geographic information system (GIS) was used to identify potential changes in the spatial and temporal distribution of human brucellosis in Azerbaijan during the study period. Epidemiological information on the age, gender, date, and location of incident cases were obtained from disease registries housed at the Republican Anti-Plague station in Baku. Cumulative incidences per 100,000 populations were calculated at the district level for three, 5-year periods. Spatial and temporal cluster analyses were performed using the Local Moran’s I and the Ederer-Myer-Mantel (EMM) test. Results A total of 7,983 cases of human brucellosis were reported during the 15-year study period. Statistically significant spatial clusters were identified in each of three, five year time periods with cumulative incidence rates ranging from 101.1 (95% CI: 82.8, 124.3) to 203.0 (95% CI; 176.4, 234.8). Spatial clustering was predominant in the west early in the study during period 1 and then in the east during periods 2 and 3. The EMM test identified a greater number of statistically significant temporal clusters in period 1 (1995 to 1999). Conclusion These results suggest that human brucellosis persisted annually in Azerbaijan across the study period. The current situation necessitates the development of appropriate surveillance aimed at improving control and mitigation strategies in order to help alleviate the current burden of disease on the population. Areas of concern identified as clusters by the spatial-temporal statistical analyses can provide a starting point for implementing targeted intervention efforts.
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- 2012
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6. Overview of U.S. COVID-19 vaccine safety surveillance systems.
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Gee J, Shimabukuro TT, Su JR, Shay D, Ryan M, Basavaraju SV, Broder KR, Clark M, Buddy Creech C, Cunningham F, Goddard K, Guy H, Edwards KM, Forshee R, Hamburger T, Hause AM, Klein NP, Kracalik I, Lamer C, Loran DA, McNeil MM, Montgomery J, Moro P, Myers TR, Olson C, Oster ME, Sharma AJ, Schupbach R, Weintraub E, Whitehead B, and Anderson S
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- Humans, United States, Vaccination adverse effects, SARS-CoV-2 immunology, Product Surveillance, Postmarketing, Immunization Programs, Centers for Disease Control and Prevention, U.S., United States Food and Drug Administration, COVID-19 Vaccines adverse effects, COVID-19 Vaccines administration & dosage, COVID-19 prevention & control, COVID-19 epidemiology, Adverse Drug Reaction Reporting Systems statistics & numerical data
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The U.S. COVID-19 vaccination program, which commenced in December 2020, has been instrumental in preventing morbidity and mortality from COVID-19 disease. Safety monitoring has been an essential component of the program. The federal government undertook a comprehensive and coordinated approach to implement complementary safety monitoring systems and to communicate findings in a timely and transparent way to healthcare providers, policymakers, and the public. Monitoring involved both well-established and newly developed systems that relied on both spontaneous (passive) and active surveillance methods. Clinical consultation for individual cases of adverse events following vaccination was performed, and monitoring of special populations, such as pregnant persons, was conducted. This report describes the U.S. government's COVID-19 vaccine safety monitoring systems and programs used by the Centers for Disease Control and Prevention, the U.S. Food and Drug Administration, the Department of Defense, the Department of Veterans Affairs, and the Indian Health Service. Using the adverse event of myocarditis following mRNA COVID-19 vaccination as a model, we demonstrate how the multiple, complementary monitoring systems worked to rapidly detect, assess, and verify a vaccine safety signal. In addition, longer-term follow-up was conducted to evaluate the recovery status of myocarditis cases following vaccination. Finally, the process for timely and transparent communication and dissemination of COVID-19 vaccine safety data is described, highlighting the responsiveness and robustness of the U.S. vaccine safety monitoring infrastructure during the national COVID-19 vaccination program., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Katherine Edwards serves as an advisor to Bionet, Dynavax, and IBM, and is on DSMBs Sanofi, X-4 Pharma, Seqirus, Moderna, Pfizer, Merck, Roche, Novavax, and Brighton Collaboration. KM Edwards also reports grants from CDC and NIH. C. Buddy Creech serves as a consults for Pfizer, GSK, Moderna, CommenseBio, and TDCowen. CB Creedch also serves on a DSMB for GSK. Nicola P. Klein reports research support from Pfizer for COVID-19 vaccine clinical trials and from Sanofi Pastuer, Merck, GSK, and Sequirus. unrelated to the work in this manuscript. Matthew Oster serves as the Emory Principal Investigator for a Pfizer-funded NIH study. All other authors have declared that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Published by Elsevier Ltd.)
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- 2024
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7. Monkeypox Virus Infections After 2 Preexposure Doses of JYNNEOS Vaccine - United States, May 2022-May 2024.
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Guagliardo SAJ, Kracalik I, Carter RJ, Braden C, Free R, Hamal M, Tuttle A, McCollum AM, and Rao AK
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- Humans, Male, United States epidemiology, Adult, Young Adult, Female, Middle Aged, Adolescent, 2019-nCoV Vaccine mRNA-1273 administration & dosage, Immunization, Secondary, Mpox, Monkeypox epidemiology, Mpox, Monkeypox prevention & control
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Two doses of JYNNEOS vaccine are effective in preventing many mpox cases and can reduce the severity of symptoms in infected persons. However, infections among fully vaccinated persons can occur. During May 2022-May 2024, a total of 271 mpox cases among fully vaccinated persons were reported to CDC from 27 U.S. jurisdictions. These reported infections are estimated to have occurred in <1% of fully vaccinated persons. Compared with cases among unvaccinated persons, infections among fully vaccinated persons were more likely to occur among non-Hispanic White men aged 30-39 years, were associated with increased numbers of sexual partners, and resulted in less severe disease (p<0.001). Among infections in fully vaccinated persons with complete data, infections after vaccination were reported more commonly after receipt of heterologous (subcutaneous and intradermal) (46%) or homologous subcutaneous (32%) JYNNEOS vaccination than after homologous intradermal (22%) vaccination. Disparate time intervals from vaccination to infection among fully vaccinated persons suggest that immunity is not waning. The median interval between the second vaccine dose and illness onset was longer for cases among persons who had received 2 intradermal doses (median = 363 days; IQR = 221-444 days) compared with cases in persons who had received 2 subcutaneous doses (median = 263 days; IQR = 47-334 days) (p<0.001). The implications of this finding are not known; however, these data should increase confidence in the effectiveness of vaccine doses that were administered intradermally, the preferred method of administration during the peak of the outbreak when vaccine supply was limited. Persons recommended to receive the JYNNEOS vaccine should receive 2 doses, irrespective of the route of administration, and at this time, additional doses are not recommended for the affected population., Competing Interests: All authors have completed and submitted the International Committee of Medical Journal Editors form for disclosure of potential conflicts of interest. No potential conflicts of interest were disclosed.
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- 2024
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8. Transfusion-related errors and associated adverse reactions and blood product wastage as reported to the National Healthcare Safety Network Hemovigilance Module, 2014-2022.
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Chavez Ortiz JL, Griffin I, Kazakova SV, Stewart PB, Kracalik I, and Basavaraju SV
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- Humans, Child, Blood Transfusion, Blood Banks, Delivery of Health Care, Blood Safety, Transfusion Reaction epidemiology, Transfusion Reaction etiology
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Background: Transfusion-related errors are largely preventable but may lead to blood product wastage and adverse reactions, resulting in patient harm. In the United States, the incidence of transfusion-related errors is poorly understood nationally. We used data from the National Healthcare Safety Network (NHSN) Hemovigilance Module to describe and quantify transfusion-related errors, as well as associated transfusion-related adverse reactions and blood product wastage., Methods: During 2014-2022, data from the NHSN Hemovigilance Module were used to analyze errors, including near misses (errors with no transfusion), incidents (errors with transfusion), and associated serious adverse reactions (severe, life-threatening, or death)., Results: During 2014-2022, 80 acute care facilities (75 adult; 5 pediatric) reported 63,900 errors. Most errors occurred during patient blood sample collection (21,761, 34.1%) and blood sample handling (16,277, 25.5%). Less than one-fifth of reported errors (9822, 15.4%) had a completed incident form. Of those, 8780 (89.3%) were near misses and 1042 (10.7%) incidents. More than a third of near misses (3363, 38.3%) were associated with a discarded blood product, resulting in 4862 discarded components. Overall, 87 adverse reactions were associated with errors; six (7%) were serious., Conclusions: Over half of the transfusion-related errors reported to the Hemovigilance Module occurred during blood sample collection or sample handling. Some serious adverse reactions identified were associated with errors, suggesting that additional safety interventions may be beneficial. Increased participation in the Hemovigilance Module could enhance generalizability and further inform policy development regarding error prevention., (Published 2024. This article is a U.S. Government work and is in the public domain in the USA.)
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- 2024
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9. Supplemental findings of the 2021 National Blood Collection and Utilization Survey.
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Kracalik I, Sapiano MRP, Wild RC, Chavez Ortiz J, Stewart P, Berger JJ, Basavaraju SV, and Free RJ
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- Humans, United States, Blood Platelets, Blood Component Transfusion, Blood Donors, Blood Component Removal, Transfusion Reaction
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Background: The Department of Health and Human Services' National Blood Collection and Utilization Survey (NBCUS) has been conducted biennially since 1997. Data are used to estimate national blood collection and use. Supplemental data from the 2021 NBCUS not presented elsewhere are presented here., Methods: Data on survey participation, donor characteristics, blood component cost, transfusion-associated adverse reactions, and implementation of blood safety measures, including pathogen-reduction of platelets, during 2021, were analyzed. Comparisons are made to 2019 survey data where available (2013-2019 for survey participation)., Results: During 2021, there were 11,507,000 successful blood donations in the United States, a 4.8% increase from 2019. Persons aged 45-64 years accounted for 42% of all successful blood donations. Donations by persons aged 65 years and older increased by 40.7%, while donations among minorities and donors aged <25 years decreased. From 2019 to 2021, the median price hospitals paid per unit of leukoreduced red blood cells, leukoreduced and pathogen-reduced apheresis platelets, and fresh frozen plasma increased. The largest increase in price per unit of blood component in 2021 was for leukoreduced apheresis platelets, which increased by ~$51. Between 2019 and 2021, the proportion of transfusing facilities reporting use of pathogen-reduced platelets increased, from 13% to 60%. Transfusion-related adverse reactions declined slightly between 2019 and 2021, although the rate of transfusion-transmitted bacterial infections remained unchanged., Conclusion: During 2021, blood donations increased nationally, although donations from those aged <25 years and minorities declined. The prices hospitals paid for most blood products increased, as did the use of pathogen-reduced platelets., (Published 2023. This article is a U.S. Government work and is in the public domain in the USA.)
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- 2023
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10. Posttransfusion Sepsis Attributable to Bacterial Contamination in Platelet Collection Set Manufacturing Facility, United States.
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Kracalik I, Kent AG, Villa CH, Gable P, Annambhotla P, McAllister G, Yokoe D, Langelier CR, Oakeson K, Noble-Wang J, Illoh O, Halpin AL, Eder AF, and Basavaraju SV
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- Humans, United States epidemiology, Platelet Transfusion adverse effects, Blood Transfusion, Bacteria genetics, Blood Platelets, Sepsis epidemiology, Sepsis etiology
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During May 2018‒December 2022, we reviewed transfusion-transmitted sepsis cases in the United States attributable to polymicrobial contaminated apheresis platelet components, including Acinetobacter calcoaceticus‒baumannii complex or Staphylococcus saprophyticus isolated from patients and components. Transfused platelet components underwent bacterial risk control strategies (primary culture, pathogen reduction or primary culture, and secondary rapid test) before transfusion. Environmental samples were collected from a platelet collection set manufacturing facility. Seven sepsis cases from 6 platelet donations from 6 different donors were identified in patients from 6 states; 3 patients died. Cultures identified Acinetobacter calcoaceticus‒baumannii complex in 6 patients and 6 transfused platelets, S. saprophyticus in 4 patients and 4 transfused platelets. Whole-genome sequencing showed environmental isolates from the manufacturer were closely related genetically to patient and platelet isolates, indicating the manufacturer was the most probable source of recurrent polymicrobial contamination. Clinicians should maintain awareness of possible transfusion-transmitted sepsis even when using bacterial risk control strategies.
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- 2023
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11. Notes from the Field: Emergence of an Mpox Cluster Primarily Affecting Persons Previously Vaccinated Against Mpox - Chicago, Illinois, March 18-June 12, 2023.
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Faherty EAG, Holly T, Ogale YP, Crisler G, Becht A, Kern D, Nicolae L, Spencer H, Wasz M, Kerins JL, Kittner A, Staton A, Hardnett C, Hutson C, Gigante CM, Quilter L, Kracalik I, Black S, McCollum AM, Rao AK, and Tabidze I
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- Humans, Chicago, Illinois, Mpox, Monkeypox
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Competing Interests: Disclosure All authors have completed and submitted the International Committee of Medical Journal Editors form for disclosure of potential conflicts of interest. Alyse Kittner reports institutional travel and meeting attendance support from the Water Environment Federation. No other potential conflicts of interest were disclosed.
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- 2023
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12. Estimated Effectiveness of JYNNEOS Vaccine in Preventing Mpox: A Multijurisdictional Case-Control Study - United States, August 19, 2022-March 31, 2023.
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Dalton AF, Diallo AO, Chard AN, Moulia DL, Deputy NP, Fothergill A, Kracalik I, Wegner CW, Markus TM, Pathela P, Still WL, Hawkins S, Mangla AT, Ravi N, Licherdell E, Britton A, Lynfield R, Sutton M, Hansen AP, Betancourt GS, Rowlands JV, Chai SJ, Fisher R, Danza P, Farley M, Zipprich J, Prahl G, Wendel KA, Niccolai L, Castilho JL, Payne DC, Cohn AC, and Feldstein LR
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- Adult, Male, Humans, United States epidemiology, Homosexuality, Male, Case-Control Studies, Mpox, Monkeypox, Sexual and Gender Minorities, Smallpox Vaccine
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As of March 31, 2023, more than 30,000 monkeypox (mpox) cases had been reported in the United States in an outbreak that has disproportionately affected gay, bisexual, and other men who have sex with men (MSM) and transgender persons (1). JYNNEOS vaccine (Modified Vaccinia Ankara vaccine, Bavarian Nordic) was approved by the Food and Drug Administration (FDA) in 2019 for the prevention of smallpox and mpox via subcutaneous injection as a 2-dose series (0.5 mL per dose, administered 4 weeks apart) (2). To expand vaccine access, an Emergency Use Authorization was issued by FDA on August 9, 2022, for dose-sparing intradermal injection of JYNNEOS as a 2-dose series (0.1 mL per dose, administered 4 weeks apart) (3). Vaccination was available to persons with known or presumed exposure to a person with mpox (postexposure prophylaxis [PEP]), as well as persons at increased risk for mpox or who might benefit from vaccination (preexposure mpox prophylaxis [PrEP]) (4). Because information on JYNNEOS vaccine effectiveness (VE) is limited, a matched case-control study was conducted in 12 U.S. jurisdictions,
† including nine Emerging Infections Program sites and three Epidemiology and Laboratory Capacity sites,§ to evaluate VE against mpox among MSM and transgender adults aged 18-49 years. During August 19, 2022-March 31, 2023, a total of 309 case-patients were matched to 608 control patients. Adjusted VE was 75.2% (95% CI = 61.2% to 84.2%) for partial vaccination (1 dose) and 85.9% (95% CI = 73.8% to 92.4%) for full vaccination (2 doses). Adjusted VE for full vaccination by subcutaneous, intradermal, and heterologous routes of administration was 88.9% (95% CI = 56.0% to 97.2%), 80.3% (95% CI = 22.9% to 95.0%), and 86.9% (95% CI = 69.1% to 94.5%), respectively. Adjusted VE for full vaccination among immunocompromised participants was 70.2% (95% CI = -37.9% to 93.6%) and among immunocompetent participants was 87.8% (95% CI = 57.5% to 96.5%). JYNNEOS is effective at reducing the risk for mpox. Because duration of protection of 1 versus 2 doses remains unknown, persons at increased risk for mpox exposure should receive the 2-dose series as recommended by the Advisory Committee on Immunization Practices (ACIP),¶ regardless of administration route or immunocompromise status., Competing Interests: All authors have completed and submitted the International Committee of Medical Journal Editors form for disclosure of potential conflicts of interest. Monica Farley reports institutional support from the National Institutes of Health (NIH), Infectious Diseases Clinical Research Consortium, and serving as the chair of the finance committee for the Southern Society for Clinical Investigation and on the finance committee for the National Foundation for Infectious Diseases. Sam Hawkins reports support from the Oregon Health Authority. Erin Licherdell reports contract support from Health Research, Inc. Ruth Lynfield reports travel support for meeting attendance from the Council of State and Territorial Epidemiologists, the Infectious Diseases Society of America, the American Academy of Pediatrics, and the National Foundation for Infectious Diseases. Linda Niccolai reports consulting fees from Merck and participation on data safety monitoring boards for Moderna and GSK. Karen A. Wendel reports institutional support from Hologic Inc., NIH, National Institute of Allergy and Infectious Diseases AIDS Clinical Trials Group for Study of Tecovirimat for Human Monkeypox Virus, honorarium for a lecture at the Bugs and Drugs Conference, University of Colorado, and co-chair of the Denver Metro Sexually Transmitted Infectious Coalition. No other potential conflicts of interest were disclosed.- Published
- 2023
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13. Outcomes at least 90 days since onset of myocarditis after mRNA COVID-19 vaccination in adolescents and young adults in the USA: a follow-up surveillance study.
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Kracalik I, Oster ME, Broder KR, Cortese MM, Glover M, Shields K, Creech CB, Romanson B, Novosad S, Soslow J, Walter EB, Marquez P, Dendy JM, Woo J, Valderrama AL, Ramirez-Cardenas A, Assefa A, Campbell MJ, Su JR, Magill SS, Shay DK, Shimabukuro TT, and Basavaraju SV
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- Adolescent, COVID-19 Vaccines adverse effects, Contrast Media, Female, Follow-Up Studies, Gadolinium, Humans, Male, Pandemics, Quality of Life, RNA, Messenger, Troponin, United States epidemiology, Vaccination, Young Adult, COVID-19 diagnosis, COVID-19 epidemiology, COVID-19 prevention & control, Myocarditis diagnosis, Myocarditis epidemiology, Myocarditis etiology
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Background: Data on medium-term outcomes in indivduals with myocarditis after mRNA COVID-19 vaccination are scarce. We aimed to assess clinical outcomes and quality of life at least 90 days since onset of myocarditis after mRNA COVID-19 vaccination in adolescents and young adults., Methods: In this follow-up surveillance study, we conducted surveys in US individuals aged 12-29 years with myocarditis after mRNA COVID-19 vaccination, for whom a report had been filed to the Vaccine Adverse Event Reporting System between Jan 12 and Nov 5, 2021. A two-component survey was administered, one component to patients (or parents or guardians) and one component to health-care providers, to assess patient outcomes at least 90 days since myocarditis onset. Data collected were recovery status, cardiac testing, and functional status, and EuroQol health-related quality-of-life measures (dichotomised as no problems or any problems), and a weighted quality-of-life measure, ranging from 0 to 1 (full health). The EuroQol results were compared with published results in US populations (aged 18-24 years) from before and early on in the COVID-19 pandemic., Findings: Between Aug 24, 2021, and Jan 12, 2022, we collected data for 519 (62%) of 836 eligible patients who were at least 90 days post-myocarditis onset: 126 patients via patient survey only, 162 patients via health-care provider survey only, and 231 patients via both surveys. Median patient age was 17 years (IQR 15-22); 457 (88%) patients were male and 61 (12%) were female. 320 (81%) of 393 patients with a health-care provider assessment were considered recovered from myocarditis by their health-care provider, although at the last health-care provider follow-up, 104 (26%) of 393 patients were prescribed daily medication related to myocarditis. Of 249 individuals who completed the quality-of-life portion of the patient survey, four (2%) reported problems with self-care, 13 (5%) with mobility, 49 (20%) with performing usual activities, 74 (30%) with pain, and 114 (46%) with depression. Mean weighted quality-of-life measure (0·91 [SD 0·13]) was similar to a pre-pandemic US population value (0·92 [0·13]) and significantly higher than an early pandemic US population value (0·75 [0·28]; p<0·0001). Most patients had improvements in cardiac diagnostic marker and testing data at follow-up, including normal or back-to-baseline troponin concentrations (181 [91%] of 200 patients with available data), echocardiograms (262 [94%] of 279 patients), electrocardiograms (240 [77%] of 311 patients), exercise stress testing (94 [90%] of 104 patients), and ambulatory rhythm monitoring (86 [90%] of 96 patients). An abnormality was noted among 81 (54%) of 151 patients with follow-up cardiac MRI; however, evidence of myocarditis suggested by the presence of both late gadolinium enhancement and oedema on cardiac MRI was uncommon (20 [13%] of 151 patients). At follow-up, most patients were cleared for all physical activity (268 [68%] of 393 patients)., Interpretation: After at least 90 days since onset of myocarditis after mRNA COVID-19 vaccination, most individuals in our cohort were considered recovered by health-care providers, and quality of life measures were comparable to those in pre-pandemic and early pandemic populations of a similar age. These findings might not be generalisable given the small sample size and further follow-up is needed for the subset of patients with atypical test results or not considered recovered., Funding: US Centers for Disease Control and Prevention., Competing Interests: Declaration of interests MEO reports a grant from the US National Institutes of Health (NIH). BC reports a Clinical and Translational Science grant from NIH and participation on the data and safety advisory board for Astellas. EBW reports a grant from Moderna, Pfizer, Sequiris, and NIH, and participation on the data and safety advisory board for Vaxcyte and Iliad Biotechnologies., (Copyright © 2022 Elsevier Ltd. All rights reserved.)
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- 2022
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14. Extensively Drug-Resistant Carbapenemase-Producing Pseudomonas aeruginosa and Medical Tourism from the United States to Mexico, 2018-2019.
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Kracalik I, Ham DC, McAllister G, Smith AR, Vowles M, Kauber K, Zambrano M, Rodriguez G, Garner K, Chorbi K, Cassidy PM, McBee S, Stoney RJ, Moser K, Villarino ME, Zazueta OE, Bhatnagar A, Sula E, Stanton RA, Brown AC, Halpin AL, Epstein L, and Walters MS
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- Anti-Bacterial Agents therapeutic use, Bacterial Proteins, Carbapenems, Humans, Mexico epidemiology, Microbial Sensitivity Tests, Pseudomonas aeruginosa drug effects, Pseudomonas aeruginosa genetics, United States epidemiology, beta-Lactamases genetics, Drug Resistance, Multiple, Bacterial, Medical Tourism, Pseudomonas Infections epidemiology, Pseudomonas Infections microbiology
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Carbapenem-resistant Pseudomonas aeruginosa (CRPA) producing the Verona integron‒encoded metallo-β-lactamase (VIM) are highly antimicrobial drug-resistant pathogens that are uncommon in the United States. We investigated the source of VIM-CRPA among US medical tourists who underwent bariatric surgery in Tijuana, Mexico. Cases were defined as isolation of VIM-CRPA or CRPA from a patient who had an elective invasive medical procedure in Mexico during January 2018‒December 2019 and within 45 days before specimen collection. Whole-genome sequencing of isolates was performed. Thirty-eight case-patients were identified in 18 states; 31 were operated on by surgeon 1, most frequently at facility A (27/31 patients). Whole-genome sequencing identified isolates linked to surgeon 1 were closely related and distinct from isolates linked to other surgeons in Tijuana. Facility A closed in March 2019. US patients and providers should acknowledge the risk for colonization or infection after medical tourism with highly drug-resistant pathogens uncommon in the United States.
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- 2022
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15. How do I… facilitate a rapid response to a public health emergency requiring plasma collection with a public-private partnership?
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Miller MJ, Skrzekut A, Kracalik I, Jones JM, Lofy KH, Konkle BA, Haley NR, Duvenhage M, Bonnett T, Holbrook M, Higgs E, Basavaraju SV, and Paranjape S
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- Adult, Aged, Aged, 80 and over, Emergencies, Female, Humans, Immunization, Passive, Male, Middle Aged, Young Adult, COVID-19 Serotherapy, Blood Specimen Collection, COVID-19 therapy, Public Health, Public-Private Sector Partnerships, SARS-CoV-2
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In March 2020, there were no treatment options for COVID-19. Passive immune therapy including anti-SARS-CoV-2 hyperimmune globulin (hIVIG) was a logical candidate for COVID-19 therapeutic trials, given past success treating emerging pathogens with endogenous neutralizing antibodies. We established a plasma collection protocol for persons recovered from COVID-19. To speed recruitment in the first U.S. hotspot, Seattle, Washington, federal and state public health agencies collaborated with Bloodworks Northwest to collect convalescent plasma (CP) for manufacturing hIVIG. During March-December 2020, we identified and recruited prospective CP donors via letters to persons recovered from COVID-19 with laboratory-confirmed SARS-CoV-2 infection. Prospective donors were pre-screened and administered a medical history survey. Anti-SARS-CoV-2 neutralizing antibody (NAb) titers were classified as qualifying (≥1:80) or non-qualifying (<1:80) for enrollment based on a live virus neutralization assay. Generalized estimating equations were used to identify characteristics of donors associated with qualifying versus nonqualifying NAb titers. Overall, 21,359 letters resulted in 3207 inquiries, 2159 prescreenings with laboratory-confirmed SARS-CoV-2 infection, and 573 donors (27% of all pre-screenings with confirmed infection) who provided a screening plasma donation. Of 573 donors screened, 254 (44%) provided plasma with qualifying NAb titers, resulting in 1284 units for hIVIG manufacture. In a multivariable model, after adjusting for other factors, time (60 days) from COVID-19 symptom onset to screening was associated with lower odds of qualifying NAb (adjusted odds ratio = 0.67, 95% CI: 0.48-0.94). The collaboration facilitated a rapid response to develop and provide hIVIG for clinical trials and CP for transfusion. Only 1 in 12 donor inquiries resulted in a qualifying plasma donation. Challenges included recruitment and the relatively low percentage of persons with high NAb titers and limited screening capacity. This resource-intensive collaboration may not be scalable but informs preparedness and response strategies for plasma collection in future epidemics. Operational readiness plans with templates for screening, consent, and data collection forms are recommended., (© 2021 AABB. This article has been contributed to by US Government employees and their work is in the public domain in the USA.)
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- 2021
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16. Impact of the early coronavirus disease 2019 pandemic on blood utilization in the United States: A time-series analysis of data reported to the National Healthcare Safety Network Hemovigilance Module.
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Kracalik I, Mowla S, Katz L, Cumming M, Sapiano MRP, and Basavaraju SV
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- Blood Component Transfusion statistics & numerical data, COVID-19 pathology, COVID-19 virology, Data Collection, Delivery of Health Care, Elective Surgical Procedures statistics & numerical data, Facilities and Services Utilization statistics & numerical data, Humans, Interrupted Time Series Analysis, Pandemics, SARS-CoV-2 isolation & purification, United States epidemiology, Blood Safety, Blood Transfusion statistics & numerical data, COVID-19 epidemiology
- Abstract
Introduction: The coronavirus disease 2019 (COVID-19) pandemic has disrupted healthcare services worldwide. However, little has been reported regarding the impact on blood utilization. We quantified the impact of COVID-19 on blood utilization and discards among facilities reporting to the National Healthcare Safety Network Hemovigilance Module., Methods: Facilities continuously reporting data, during January 2016-June 2020, on transfused and discarded blood components, stratified by component type (red blood cells [RBC], platelets, and plasma), were included. Interrupted time-series analysis with generalized estimating equations, adjusting for facility surgical volume and seasonality, was used to quantify changes in blood utilization and discards relative to a Centers for Medicare & Medicaid Services notification delaying nonessential medical procedures (March 2020)., Results: Seventy-two facilities included in the analyses, on average, transfused 44,548 and discarded 2,202 blood components monthly. Following the March 2020 notification and after multivariable adjustment, RBC and platelet utilization declined, -9.9% (p < .001) and -13.6% (p = .014), respectively. Discards increased for RBCs (30.2%, p = .047) and platelets (60.4%, p = .002). No statistically significant change in plasma was found. Following these abrupt changes, blood utilization and discards rebounded toward baseline with RBC utilization increasing by 5.7% (p < .001), and platelet and RBC discards decreasing -16.4% (<0.001) and -12.7 (p = .001), respectively., Conclusion: Following notification delaying elective surgical procedures, blood utilization declined substantially while blood discards increased, resulting in substantial wastage of blood products. Ongoing and future pandemic response efforts should consider the impact of interventions on blood supply and demand to ensure blood availability., (© 2021 AABB. This article has been contributed to by US Government employees and their work is in the public domain in the USA.)
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- 2021
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17. Transfusion-related adverse reactions: Data from the National Healthcare Safety Network Hemovigilance Module - United States, 2013-2018.
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Kracalik I, Mowla S, Basavaraju SV, and Sapiano MRP
- Subjects
- Blood Component Removal adverse effects, Blood Transfusion, Humans, Transfusion-Related Acute Lung Injury epidemiology, United States epidemiology, Blood Component Transfusion adverse effects, Blood Safety adverse effects, Transfusion Reaction epidemiology
- Abstract
Background: Despite current blood safety measures, transfusion recipients can experience transfusion-related adverse reactions. Monitoring these reactions can aid in understanding the effectiveness of current transfusion safety measures. Data from the National Healthcare Safety Network Hemovigilance Module were used to quantify adverse reaction risk., Methods: Facilities reporting at least one month of transfused blood components and transfusion-related adverse reactions during January 2013-December 2018 were included. Adverse reaction rates (number per 100,000 components transfused) were calculated for transfused components stratified by component type, collection, and modification methods., Results: During 2013-2018, 201 facilities reported 18,308 transfusion-related adverse reactions among 8.34 million blood components transfused (220/100,000). Adverse reactions were higher among apheresis (486/100,000) and pathogen-reduced platelets (579/100,000) than apheresis red blood cells (197/100,000). Allergic reactions (41%) were most common. There were 23 fatalities and 9% of all adverse reactions were serious (severe, life-threatening, or fatal). Reactions involving pulmonary complications (transfusion-associated circulatory overload, transfusion-related acute lung injury and transfusion-associated dyspnea) accounted for 35% of serious reactions but 65% of fatalities. Most (76%) of the 37 transfusion-transmitted infections were serious; none involved pathogen-reduced components., Conclusions: One in 455 blood components transfused was associated with an adverse reaction although the risk of serious reactions (1 in 6224) or transfusion-transmitted infections (1 in 225,440) was lower. Some serious reactions identified were preventable, suggesting additional safety measures may be beneficial. Higher reaction rates identified among pathogen-reduced platelets require further study. These findings highlight the importance of monitoring reactions through national hemovigilance to inform current safety measures and the need for strategies to increase healthcare facility participation., (© 2021 AABB.)
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- 2021
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18. SARS-CoV-2 Infections among Recent Organ Recipients, March-May 2020, United States.
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Jones JM, Kracalik I, Rana MM, Nguyen A, Keller BC, Mishkin A, Hoopes C, Kaleekal T, Humar A, Vilaro J, Im G, Smith L, Justice A, Leaumont C, Lindstrom S, Whitaker B, La Hoz RM, Michaels MG, Klassen D, Kuhnert W, and Basavaraju SV
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- Aged, COVID-19 virology, Female, Humans, Male, Middle Aged, United States epidemiology, COVID-19 epidemiology, Organ Transplantation adverse effects, Postoperative Complications virology, SARS-CoV-2
- Abstract
We conducted public health investigations of 8 organ transplant recipients who tested positive for severe acute respiratory syndrome coronavirus 2 infection. Findings suggest the most likely source of transmission was community or healthcare exposure, not the organ donor. Transplant centers should educate transplant candidates and recipients about infection prevention recommendations.
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- 2021
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19. Assessing Solid Organ Donors and Monitoring Transplant Recipients for Human Immunodeficiency Virus, Hepatitis B Virus, and Hepatitis C Virus Infection - U.S. Public Health Service Guideline, 2020.
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Jones JM, Kracalik I, Levi ME, Bowman JS 3rd, Berger JJ, Bixler D, Buchacz K, Moorman A, Brooks JT, and Basavaraju SV
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- Humans, Organ Transplantation, Practice Guidelines as Topic, Risk Factors, Tissue and Organ Procurement, United States, United States Public Health Service, HIV Infections prevention & control, Hepatitis B prevention & control, Hepatitis C prevention & control, Tissue Donors statistics & numerical data, Transplant Recipients statistics & numerical data
- Abstract
The recommendations in this report supersede the U.S Public Health Service (PHS) guideline recommendations for reducing transmission of human immunodeficiency virus (HIV), hepatitis B virus (HBV), and hepatitis C virus (HCV) through organ transplantation (Seem DL, Lee I, Umscheid CA, Kuehnert MJ. PHS guideline for reducing human immunodeficiency virus, hepatitis B virus, and hepatitis C virus transmission through organ transplantation. Public Health Rep 2013;128:247-343), hereafter referred to as the 2013 PHS guideline. PHS evaluated and revised the 2013 PHS guideline because of several advances in solid organ transplantation, including universal implementation of nucleic acid testing of solid organ donors for HIV, HBV, and HCV; improved understanding of risk factors for undetected organ donor infection with these viruses; and the availability of highly effective treatments for infection with these viruses. PHS solicited feedback from its relevant agencies, subject-matter experts, additional stakeholders, and the public to develop revised guideline recommendations for identification of risk factors for these infections among solid organ donors, implementation of laboratory screening of solid organ donors, and monitoring of solid organ transplant recipients. Recommendations that have changed since the 2013 PHS guideline include updated criteria for identifying donors at risk for undetected donor HIV, HBV, or HCV infection; the removal of any specific term to characterize donors with HIV, HBV, or HCV infection risk factors; universal organ donor HIV, HBV, and HCV nucleic acid testing; and universal posttransplant monitoring of transplant recipients for HIV, HBV, and HCV infections. The recommendations are to be used by organ procurement organization and transplant programs and are intended to apply only to solid organ donors and recipients and not to donors or recipients of other medical products of human origin (e.g., blood products, tissues, corneas, and breast milk). The recommendations pertain to transplantation of solid organs procured from donors without laboratory evidence of HIV, HBV, or HCV infection. Additional considerations when transplanting solid organs procured from donors with laboratory evidence of HCV infection are included but are not required to be incorporated into Organ Procurement and Transplantation Network policy. Transplant centers that transplant organs from HCV-positive donors should develop protocols for obtaining informed consent, testing and treating recipients for HCV, ensuring reimbursement, and reporting new infections to public health authorities., Competing Interests: All authors have completed and submitted the International Committee of Medical Journal Editors form for disclosure of potential conflicts of interest. No potential conflicts of interest were disclosed.
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- 2020
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20. Notes from the Field: Unexplained Dermatologic, Respiratory, and Ophthalmic Symptoms Among Health Care Personnel at a Hospital - West Virginia, November 2017-January 2018.
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Lucas TJ, Holodniy M, de Perio MA, Perkins KM, Benowitz I, Jackson D, Kracalik I, Grant M, Oda G, and Powell KM
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- Humans, Medically Unexplained Symptoms, Occupational Diseases etiology, West Virginia epidemiology, Disease Outbreaks, Occupational Diseases epidemiology, Personnel, Hospital statistics & numerical data
- Abstract
Competing Interests: All authors have completed and submitted the International Committee of Medical Journal Editors form for disclosure of potential conflicts of interest. No potential conflicts of interest were disclosed.
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- 2019
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21. Bacterial and Fungal Infections in Persons Who Inject Drugs - Western New York, 2017.
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Hartnett KP, Jackson KA, Felsen C, McDonald R, Bardossy AC, Gokhale RH, Kracalik I, Lucas T, McGovern O, Van Beneden CA, Mendoza M, Bohm M, Brooks JT, Asher AK, Magill SS, Fiore A, Blog D, Dufort EM, See I, and Dumyati G
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- Adolescent, Adult, Aged, Female, Humans, Male, Middle Aged, New York epidemiology, Young Adult, Bacterial Infections epidemiology, Mycoses epidemiology, Population Surveillance, Substance Abuse, Intravenous complications, Substance Abuse, Intravenous epidemiology
- Abstract
During 2014-2017, CDC Emerging Infections Program surveillance data reported that the occurrence of invasive methicillin-resistant Staphylococcus aureus (MRSA) infections associated with injection drug use doubled among persons aged 18-49 years residing in Monroe County in western New York.* Unpublished surveillance data also indicate that an increasing proportion of all Candida spp. bloodstream infections in Monroe County and invasive group A Streptococcus (GAS) infections in 15 New York counties are also occurring among persons who inject drugs. In addition, across six surveillance sites nationwide, the proportion of invasive MRSA infections that occurred in persons who inject drugs increased from 4.1% of invasive MRSA cases in 2011 to 9.2% in 2016 (1). To better understand the types and frequency of these infections and identify prevention opportunities, CDC and public health partners conducted a rapid assessment of bacterial and fungal infections among persons who inject drugs in western New York. The goals were to assess which bacterial and fungal pathogens most often cause infections in persons who inject drugs, what proportion of persons who inject use opioids, and of these, how many were offered medication-assisted treatment for opioid use disorder. Medication-assisted treatment, which includes use of medications such as buprenorphine, methadone, and naltrexone, reduces cravings and has been reported to lower the risk for overdose death and all-cause mortality in persons who use opioids (2,3). In this assessment, nearly all persons with infections who injected drugs used opioids (97%), but half of inpatients (22 of 44) and 12 of 13 patients seen only in the emergency department (ED) were not offered medication-assisted treatment. The most commonly identified pathogen was S. aureus (80%), which is frequently found on skin. Health care visits for bacterial and fungal infections associated with injection opioid use are an opportunity to treat the underlying opioid use disorder with medication-assisted treatment. Routine care for patients who continue to inject should include advice on hand hygiene and not injecting into skin that has not been cleaned or to use any equipment contaminated by reuse, saliva, soil, or water (4,5)., Competing Interests: All authors have completed and submitted the ICMJE form for disclosure of potential conflicts of interest. Elizabeth Dufort reports that her spouse has a Gilead Foundation FOCUS research grant for expanded hepatitis C virus screening and testing. No other potential conflicts of interest were disclosed.
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- 2019
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22. Notes from the Field: Verona Integron-Encoded Metallo-β-Lactamase-Producing Carbapenem-Resistant Pseudomonas aeruginosa Infections in U.S. Residents Associated with Invasive Medical Procedures in Mexico, 2015-2018.
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Kracalik I, Ham C, Smith AR, Vowles M, Kauber K, Zambrano M, Rodriguez G, Garner K, Chorbi K, Cassidy PM, McBee S, Stoney R, Brown AC, Moser K, Villarino ME, and Walters MS
- Subjects
- Adult, Female, Humans, Male, Mexico, Middle Aged, United States epidemiology, Carbapenems pharmacology, Integrons, Medical Tourism, Pseudomonas Infections epidemiology, Pseudomonas aeruginosa drug effects, Pseudomonas aeruginosa isolation & purification, beta-Lactamases biosynthesis
- Abstract
Competing Interests: All authors have completed and submitted the ICMJE form for disclosure of potential conflicts of interest. No potential conflicts of interest were disclosed.
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- 2019
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23. Changing livestock vaccination policy alters the epidemiology of human anthrax, Georgia, 2000-2013.
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Kracalik I, Malania L, Broladze M, Navdarashvili A, Imnadze P, Ryan SJ, and Blackburn JK
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- Adolescent, Adult, Aged, Aged, 80 and over, Animals, Child, Child, Preschool, Epidemiological Monitoring, Ethnicity, Female, Georgia (Republic) epidemiology, Humans, Incidence, Infant, Male, Middle Aged, Spatial Analysis, Topography, Medical, Young Adult, Anthrax epidemiology, Anthrax prevention & control, Anthrax Vaccines administration & dosage, Anthrax Vaccines immunology, Health Policy, Zoonoses epidemiology, Zoonoses prevention & control
- Abstract
Anthrax is a widely spread zoonotic disease found on nearly every continent. To control the disease in humans and animals, annual livestock vaccination is recommended. However, in 2007, the country of Georgia ended its policy of compulsory annual livestock anthrax vaccination. Our objective was to assess how the epidemiology of human anthrax has evolved from 2000-2013 in Georgia, in the wake of this cessation. We used passive surveillance data on epidemiological surveys of human anthrax case patients. Risk factors and rates of self-reported sources of infection were compared, before and after the change in livestock vaccination policy. We mapped ethnicity-adjusted incidence during the two periods and assessed changes in the spatial pattern of risk. The overall risk of human anthrax increased >5-fold, from 0.7 cases per 100,000 in 2000 to 3.7 cases per 100,000 by 2013. Ethnic disparities in risk became pronounced; from 2000 to 2013, incidence increased >60-fold in Azerbaijanis from 0.35 to 21.1 cases/100,000 Azerbaijanis compared to 0.61 to 1.9 cases/100,000 among ethnic Georgians. Food-borne exposures from purchasing meat increased from 11% in 2000-2006 to 21% in 2007-2013. Spatial analyses revealed a shift from a random pattern of reporting pre-policy change to clustering among district municipalities following the change in policy. Our findings indicate there were unintended human health consequences associated with changing livestock vaccination policy. Following a reduction in the immunizations administered, there was a major shift in the epidemiology of human anthrax in Georgia. Current infection risk is now highest among ethnic minorities. Increased reporting among individuals uncharacteristically at risk for anthrax from foodborne exposures suggests spillover from modes of agricultural production. Given the importance of human-livestock health linkages, careful evaluations of policy need to be undertaken before changes to animal vaccination are made., (Copyright © 2017 Elsevier Ltd. All rights reserved.)
- Published
- 2017
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24. Genetic Studies of Vibrio cholerae in South West Cameroon-A Phylogenetic Analysis of Isolates from the 2010-2011 Epidemic.
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Ngwa MC, Masalla T, Esemu S, Fumoloh FF, Kracalik I, Cella E, Alam MT, Akoachere JF, Liang S, Salemi M, Morris JG, Ali A, and Ndip LM
- Abstract
Introduction: During the cholera outbreak from 2010 to 2011 in Cameroon, 33,192 cases with 1,440 deaths (case fatality ratio 4.34%) were reported to the World Health Organization. Of these, the South West Region reported 3,120 clinical cases. This region is in the Equatorial Monsoon climatic subzone of Cameroon, close to the coast, raising questions as to whether cases were linked with development of environmental reservoirs., Methods: In an investigation conducted by the Laboratory for Emerging Infectious Diseases, University of Buea, toxigenic V. cholerae O1 were isolated from diarrheal stool samples from 18 patients, with ages ranging from <3 to 70 years. Coordinates for clinical centers at which cases were identified were obtained using a handheld GPS, and were mapped using ArcGIS. Antibiotic susceptibility testing was performed using the Kirby 'Bauer agar disc diffusion method. The full genomes of these strains were sequenced with the Illumina MiSeq platform. De novo assembly of cholera genomes and multiple sequence alignment were carried out using the bioinformatics pipeline developed in the Emerging Pathogens Institute laboratory at the University of Florida., Results/discussion: Genetic comparisons showed that isolates were closely related, with pairwise p-distances ranging from 2.25 to 14.52 10-5 nt substitutions per site, and no statistically significant correlation between the pairwise genetic distances and the geographic distances among sampling locations. Indeed, the phylogeny of the Cameroonian strains displays the typical star-like topology and intermixing of strains from different locations that are characteristic of an exponential outbreak localized around a relatively restricted area with occasional spillover to other parts of the country, likely mediated by direct human contact and human movement. Findings highlight the utility of whole genome sequencing and phylogenetic analysis in understanding transmission patterns at the local level.
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- 2016
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25. Human Anthrax Transmission at the Urban-Rural Interface, Georgia.
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Kracalik I, Malania L, Imnadze P, and Blackburn JK
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- Abattoirs statistics & numerical data, Adult, Animals, Anthrax epidemiology, Anthrax veterinary, Bacillus anthracis, Female, Georgia (Republic) epidemiology, Humans, Livestock microbiology, Male, Meat microbiology, Middle Aged, Risk Factors, Rural Population statistics & numerical data, Urban Population statistics & numerical data, Zoonoses epidemiology, Zoonoses transmission, Anthrax transmission
- Abstract
Human anthrax has increased dramatically in Georgia and was recently linked to the sale of meat in an urban market. We assessed epidemiological trends and risk factors for human anthrax at the urban-rural interface. We reviewed epidemiologic records (2000-2012) that included the place of residence (classified as urban, peri-urban, or rural), age, gender, and self-reported source of infection (handling or processing animal by-products and slaughtering or butchering livestock). To estimate risk, we used a negative binomial regression. The average incidence per 1 million population in peri-urban areas (24.5 cases) was > 2-fold higher compared with rural areas and > 3-fold higher compared with urban area. Risk from handling or purchasing meat was nearly 2-fold higher in urban areas and > 4-fold higher in peri-urban areas compared with rural area. Our findings suggest a high risk of anthrax in urban and peri-urban areas likely as a result of spillover from contaminated meat and animal by-products. Consumers should be warned to purchase meat only from licensed merchants., (© The American Society of Tropical Medicine and Hygiene.)
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- 2015
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26. Environmental Monitoring and Surveillance of Rodents and Vectors for Francisella tularensis Following Outbreaks of Human Tularemia in Georgia.
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Elashvili E, Kracalik I, Burjanadze I, Datukishvili S, Chanturia G, Tsertsvadze N, Beridze L, Shavishvili M, Dzneladze A, Grdzelidze M, Imnadze P, Pearson A, and Blackburn JK
- Subjects
- Animals, Arvicolinae, Environmental Monitoring, Georgia epidemiology, Humans, Rodentia, Tularemia microbiology, Zoonoses, Dermacentor microbiology, Disease Outbreaks, Disease Reservoirs microbiology, Francisella tularensis isolation & purification, Tularemia epidemiology
- Abstract
Tularemia is a re-emerging bacterial zoonosis, broadly distributed across the northern hemisphere. In Georgia, there is a history of human tularemia outbreaks dating back to the 1940s. In response to outbreaks, health officials initiated long-term field surveillance and environmental monitoring. The objective of our study was to obtain information from 57 years of field surveys to identify species that play a role in the occurrence Francisella tularensis subsp. holarctica in the environment in Georgia. We collected historical data on human outbreaks, field collections, population dynamics of the common vole (Microtus arvalis), and conducted surveys on small mammals and vectors from five regions in Georgia during 1956-2012. Bacterial isolation was conducted using standard culturing techniques, and isolation rates for species were obtained for a subset of years. We used a Spearman rank correlation to test for associations between the density of the common vole and isolation rates. From 1956 through 2012, there were four recorded outbreaks of human tularemia (362 cases). A total of 465 bacterial isolates of F. tularensis subsp. holarctica were obtained from 27 species and environmental samples. The number of isolations was highest in the common vole (M. arvalis; 149 isolates; 32%) and Dermacentor marginatus ticks (132 isolates; 28%); isolation rates ranged between 0-0.91% and 0-0.47%, respectively. Population dynamics of the common vole were not correlated with the isolation rate. Given the history of tularemia re-emergence in Georgia, continued field surveys and environmental monitoring may provide an early indication of outbreak risk in humans. In conclusion, our findings provide evidence of long-standing foci of F. tularensis subsp. holarctica that are likely maintained by the common vole-tick cycle.
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- 2015
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27. Changing patterns of human anthrax in Azerbaijan during the post-Soviet and preemptive livestock vaccination eras.
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Kracalik I, Abdullayev R, Asadov K, Ismayilova R, Baghirova M, Ustun N, Shikhiyev M, Talibzade A, and Blackburn JK
- Subjects
- Animals, Anthrax Vaccines, Azerbaijan epidemiology, Disease Outbreaks, Humans, Incidence, Livestock, Anthrax epidemiology, Anthrax prevention & control, Anthrax veterinary
- Abstract
We assessed spatial and temporal changes in the occurrence of human anthrax in Azerbaijan during 1984 through 2010. Data on livestock outbreaks, vaccination efforts, and human anthrax incidence during Soviet governance, post-Soviet governance, preemptive livestock vaccination were analyzed. To evaluate changes in the spatio-temporal distribution of anthrax, we used a combination of spatial analysis, cluster detection, and weighted least squares segmented regression. Results indicated an annual percent change in incidence of (+)11.95% from 1984 to 1995 followed by declining rate of -35.24% after the initiation of livestock vaccination in 1996. Our findings also revealed geographic variation in the spatial distribution of reporting; cases were primarily concentrated in the west early in the study period and shifted eastward as time progressed. Over twenty years after the dissolution of the Soviet Union, the distribution of human anthrax in Azerbaijan has undergone marked changes. Despite decreases in the incidence of human anthrax, continued control measures in livestock are needed to mitigate its occurrence. The shifting patterns of human anthrax highlight the need for an integrated "One Health" approach that takes into account the changing geographic distribution of the disease.
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- 2014
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28. Human cutaneous anthrax, Georgia 2010-2012.
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Kracalik I, Malania L, Tsertsvadze N, Manvelyan J, Bakanidze L, Imnadze P, Tsanava S, and Blackburn JK
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- Adolescent, Adult, Aged, Aged, 80 and over, Animals, Anthrax microbiology, Anthrax transmission, Bacillus anthracis physiology, Cattle, Child, Child, Preschool, Female, Georgia (Republic) epidemiology, Humans, Male, Middle Aged, Retrospective Studies, Skin Diseases, Bacterial microbiology, Skin Diseases, Bacterial transmission, Spatio-Temporal Analysis, Anthrax epidemiology, Bacillus anthracis pathogenicity, Disease Outbreaks, Skin Diseases, Bacterial epidemiology
- Abstract
We assessed the occurrence of human cutaneous anthrax in Georgia during 2010--2012 by examining demographic and spatial characteristics of reported cases. Reporting increased substantially, as did clustering of cases near urban centers. Control efforts, including education about anthrax and livestock vaccination, can be directed at areas of high risk.
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- 2014
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29. Incorporating retrospective clustering into a prospective Cusum methodology for anthrax: evaluating the effects of disease expectation.
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Kracalik I, Lukhnova L, Aikimbayev A, Pazilov Y, Temiralyeva G, and Blackburn JK
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- Animals, Anthrax veterinary, Cluster Analysis, Data Interpretation, Statistical, Disease Outbreaks veterinary, Geography, Medical methods, Geography, Medical statistics & numerical data, Kazakhstan epidemiology, Livestock, Prospective Studies, Retrospective Studies, Anthrax epidemiology, Disease Outbreaks statistics & numerical data, Spatio-Temporal Analysis
- Abstract
We analysed livestock anthrax in Kazakhstan from 1960-2006, using a prospective CUSUM to examine the affects of expectation on the detection of spatio-temporal clusters. Three methods for deriving baselines were used for CUSUM; a standard z-score, AVG, a spatially-weighted z-score derived from Local Moran's I, LISA, and a moving-window average, MWA. LISA and AVG elicited alarm signals in the second year that did not return below threshold during the 47-year period, while MWA signaled an alarm at year four and relented at year fifteen. The number of spatial clusters elicited varied: LISA n=16, AVG n=11, and MWA n=3, although there were clusters present around Shymkent, in south-central Kazakhstan, in each method. The results illustrate that the selection of a baseline with an unknown background population has a significant effect on the ability to detect the onset of clusters in space and in time when employing a CUSUM methodology., (Copyright © 2010 Elsevier Ltd. All rights reserved.)
- Published
- 2011
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