Search

Background: Measurements of CD4 T cells and hemoglobin (Hb) are conventionally used to determine the immunological state and disease progression for HIV-infected patients. We obtained a small lightweight point-of-care device, the BD FACSPrestoTM in order to demonstrate its ability to deliver CD4 and Hb analysis in comparison with two larger clinical machines the BDFACSCantoTM analyzer and Sysmex XN 1000 haematology analyzer. The advantages of using the POC device include access to HIV patient data in remote and in resource limited settings. Method: The analytical performance of the BD FACSPrestoTM, compared with the FACSCantoTM II flow cytometer and the Sysmex XN 1000 haematology analyzer was evaluated by testing 241 routine clinical specimens collected in EDTA tubes from patients attending the Immunology and Microbiology laboratory of Chantal BIYA International Reference Centre (Yaounde, Cameroon) between January and May 2016. Results: The mean in absolute counts and percentage of CD4 T cells was 606 cells/mL and 25% respectively via the FACSPrestoTM, and 574 cells/mL and 24% respectively via the BD FACSCantoTM II. The mean concentration of Hb levels was 11.90 on the Sysmex XN 1000 and 11.45 via the BD FACSPrestoTM, A high correlation (R2 = 0.95, P < 0.001) of Hb level measurements was noted between the BD FACSPrestoTM and Sysmex XN 1000 hematology analyzer. Overall, a Bland-Altman plot of the differences between the two methods showed an excellent agreement for absolute and percentage CD4 counts and hemoglobin measurements between POC and conventional methods evaluated here. Furthermore, the study demonstrated the ease of use of the BD FACSPrestoTM POC technology in remote areas. Conclusion: The BD FACPrestoTM is a suitable tool for CD4 enumeration in resource-limited settings, specifically providing a deployable, reliable POC testing option. The BD FACSPrestoTM performed appropriately in comparison to the conventional reference standard technologies. The BD FACSPrestoTM, system provides accurate, reliable, precise CD4/%CD4/Hb results on venous blood sampling. The data showed good agreement between the BD FACSPrestoTM, BD FACSCantoTM II and Sysmex XN 1000 XN 1000 systems. [ABSTRACT FROM AUTHOR]

ContextThe person-centred approach (PCA) is a promising avenue for care improvement. However, health professionals in Burkina Faso (hereafter referred to as caregivers) seem unprepared for taking into consideration patients' preferences and values in the context of healthcare provision.ObjectiveTo understand the meaning attributed to PCA in the Burkina Faso context of care and to identify the challenges related to its adoption from the perspective of caregivers and women service users (hereafter referred to as patients).MethodsAn ethnographic qualitative research design was used in this study. We conducted 31 semi-directed interviews with caregivers and patients from Koudougou (Burkina Faso) healthcare facilities. We also carried out direct observation of consultations. Data thematic analyses are based on the person-centred approach analysis framework.ResultsAccording to the caregivers and patients interviewed, the PCA in maternal and child healthcare in Burkina Faso includes the following five components used in our analytical framework: i) pregnancy follow-up consultations extend beyond examining physical health issues (biopsychosocial component), ii) healthcare professionals' mood affects the caregiver-patient relationship as well as care delivery (the healthcare professional as a person), iii) patients expect to be well received, listened to, and respected (the patient as a person), iv) healthcare professionals first acknowledge that both themselves and patients have power, rights but also responsibilities (sharing power, rights and responsibilities of professionals and patients), and v) healthcare professionals who are open to involving patients in decision-making about their care and patients asking to have a say in the organization of services (therapeutic alliance). Implementing each of these themes comes with challenges, such as i) talking about health problems in the presence of other women, especially those related to sexuality, even though they are common to parturient women (biopsychosocial component); ii) offering psychotherapy to healthcare professionals (healthcare professional as a person); iii) taking into consideration patients' cultural and linguistic differences (the patient as a person); iv) raising awareness among patients about their right to ask questions and healthcare professionals' duty to answer them (sharing power, and rights and responsibilities of professionals and patients); v) accepting the presence of birth attendants while avoiding traditional practices that are contrary to scientific recommendations (therapeutic alliance).ConclusionDespite some context-specific particularities, the PCA is not new in the context of health care in Burkina Faso. However, its implementation can pose a number of challenges. There is a need to train healthcare professionals with a view to being sensitive to these particularities. This may also require organizational adjustments so as to create the physical and sociocultural environments that are conducive to taking into account the patient's perspective.

The effectiveness of insecticide-based malaria vector control interventions in Africa is threatened by the spread and intensification of pyrethroid resistance in targeted mosquito populations. The present study aimed at investigating the temporal and spatial dynamics of deltamethrin resistance in An. gambiae s.l. populations from North Cameroon. Mosquito larvae were collected from 24 settings of the Garoua, Pitoa and Mayo Oulo Health Districts (HDs) from 2011 to 2015. Two to five days old female An. gambiae s.l. emerging from larval collections were tested for deltamethrin resistance using the World Health Organization's (WHO) standard protocol. Sub samples of test mosquitoes were identified to species using PCR-RFLP and genotyped for knockdown resistance alleles (Kdr 1014F and 1014S) using Hot Ligation Oligonucleotide Assay (HOLA). All the tested mosquitoes were identified as belonging to the An. gambiae complex, including 3 sibling species mostly represented by Anopheles arabiensis (67.6%), followed by Anopheles coluzzii (25.4%) and Anopheles gambiae (7%). Deltamethrin resistance frequencies increased significantly between 2011 and 2015, with mosquito mortality rates declining from 70-85% to 49-73% in the three HDs (Jonckheere-Terstra test statistic (JT) = 5638, P< 0.001), although a temporary increase of mortality rates (91-97%) was seen in the Pitoa and Mayo Oulo HDs in 2012. Overall, confirmed resistance emerged in 10 An. gambiae s.l. populations over the 24 field populations monitored during the study period, from 2011 to 2015. Phenotypic resistance was mostly found in urban settings compared with semi-urban and rural settings (JT = 5282, P< 0.0001), with a spatial autocorrelation between neighboring localities. The Kdr 1014F allelic frequencies in study HDs increased from 0-30% in 2011 to 18-61% in 2014-2015 (JT = 620, P