Correction: CT-Angiographic Aspects of Pulmonary Embolism on SARS COV-2

This article details a correction to the article: Tiemtore-Kambou BM-A, Ouédraogo A, Dao SBA, Sieba IFN, Koama A, Traoré IS, Napon S, Ouédraogo W, Sankara HD, Cissé R, Dienderé É. (2023). CT-Angiographic Aspects of Pulmonary Embolism on SARS COV-2. Journal of the Belgian Society of Radiology, 107(1): 22, 1–8. DOI: https://doi.org/10.5334/jbsr.3021

Immunovirological discordance among female sex workers who start antiretroviral therapy in Burkina Faso

International audienceAbstract Background In people living with HIV/AIDS (PLWHA), initiation of antiretroviral therapy (ART) leads to sustained effective suppression of viral replication and increasing CD4 + T cell count. However, a fraction of ART-treated patients still fail to reach adequate CD4 + T cell number despite a suppressed viral load (VL), and this phenomenon is defined as immunovirological discordance (IVD). In Africa, several studies have reported immunovirological outcomes of antiretroviral therapy, but little is known about IVD occurrence in Female sex workers (FSW). This study aimed to assess the prevalence of IVD and associated factors among a cohort of HIV infected FSW in Burkina Faso. Methods We conducted a cohort study from December 2003 to October 2016. Immunovirological discordance was defined as CD4 + T cell gain < 100 cells/µL despite a suppressed VL (VL < 1000 copies/mL) 12 months after ART initiation. The CD4 + T cells were counted using BD FACSCount™ System and point of care Pima™ CD4 + Analyzer. HIV-1 RNA was quantified by real-time polymerase-chain-reaction assay with the use of the ABI 7000 system. We conducted a logistic regression to identify factors associated with discordant responses. Results Among the 123 HIV-1 infected FSW having at least 12 months follow-up on ART, 105 (85.4%) achieved HIV-1 RNA suppression. Among the latter 25 gained less than 100 CD4 + T cells within 12 months follow-up. The IVD rate was 23.8% (95%CI 16.04%–33.11%). After adjustment for age, WHO clinical stage and ART regimen including nucleoside/nucleotide reverse transcriptase inhibitors, only baseline CD4 + T cell count between 200 to 350 cells/µL (adjusted OR: 4.15; 95%CI 1.13–15.22) and 350 to 500 cells/µL (adjusted OR: 17.50; 95%CI 2.68–114.31) remain significantly associated with IVD occurrence. Conclusions Immunovirological discordance response was common in FSW with proportions close to those observed in the general population. A diagnosis and personalized follow-up of patients who do not achieve full immune reconstitution would make it possible to avoid complications in terms of morbidity and mortality

Initial validation of a simulation model for estimating the impact of serogroup A Neisseria meningitidis vaccination in the African meningitis belt.

We previously developed a mathematical simulation of serogroup A Neisseria meningitidis (NmA) transmission in Burkina Faso, with the goal of forecasting the relative benefit of different vaccination programs. Here, we revisit key structural assumptions of the model by comparing how accurately the different assumptions reproduce observed NmA trends following vaccine introduction. A priori, we updated several of the model's parameters based on recently published studies. We simulated NmA disease under different assumptions about duration of vaccine-induced protection (including the possibility that vaccine-induced protection may last longer than natural immunity). We compared simulated and observed case counts from 2011-2017. We then used the best-fit model to forecast the impact of different vaccination strategies. Our updated model, with the assumption that vaccine-induced immunity lasts longer than immunity following NmA colonization, was able to reproduce observed trends in NmA disease. The updated model predicts that, following a mass campaign among persons 1-29 years of age, either routine immunization of 9 month-old children or periodic mini-campaigns among children 1-4 years of age will lead to sustained control of epidemic NmA in Burkina Faso. This validated model can help public health officials set policies for meningococcal vaccination in Africa

Évaluation des interventions de santé mondiale

Une couverture universelle des soins de santé en 2030 pour tous les êtres humains, du Nord au Sud ? Réaliser cet objectif de développement durable aussi ambitieux que nécessaire exigera une exceptionnelle volonté politique, mais aussi de solides données probantes sur les moyens d’y arriver, notamment sur les interventions de santé mondiale les plus efficaces. Savoir les évaluer est donc un enjeu majeur. On ne peut plus se contenter de mesurer leur efficacité : il nous faut comprendre pourquoi elles l’ont été (ou pas), comment et dans quelles conditions. Cet ouvrage collectif réunissant 27 auteurs et 12 autrices de différents pays et de disciplines variées a pour but de présenter de manière claire et accessible, en français, un florilège d’approches et de méthodes avancées en évaluation d’interventions : quantitatives, qualitatives, mixtes, permettant d’étudier l’évaluabilité, la pérennité, les processus, la fidélité, l’efficience, l’équité et l’efficacité d’interventions complexes. Chaque méthode est présentée dans un chapitre à travers un cas réel pour faciliter la transmission de ces savoirs précieux