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"Zannou, Djimon Marcel"
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Predictive Factors of Plasma HIV Suppression during Pregnancy: A Prospective Cohort Study in Benin
by
Denoeud-Ndam, Lise
,
Azon-Kouanou, Angèle
,
Ogouyemi-Hounto, Aurore
in
Acquired immune deficiency syndrome
,
Adult
,
AIDS
2013
To investigate the factors associated with HIV1 RNA plasma viral load (pVL) below 40 copies/mL at the third trimester of pregnancy, as part of prevention of mother-to-child transmission (PMTCT) in Benin.
Sub study of the PACOME clinical trial of malaria prophylaxis in HIV-infected pregnant women, conducted before and after the implementation of the WHO 2009 revised guidelines for PMTCT.
HIV-infected women were enrolled in the second trimester of pregnancy. Socio-economic characteristics, HIV history, clinical and biological characteristics were recorded. Malaria prevention and PMTCT involving antiretroviral therapy (ART) for mothers and infants were provided. Logistic regression helped identifying factors associated with virologic suppression at the end of pregnancy.
Overall 217 third trimester pVLs were available, and 71% showed undetectability. Virologic suppression was more frequent in women enrolled after the change in PMTCT recommendations, advising to start ART at 14 weeks instead of 28 weeks of pregnancy. In multivariate analysis, Fon ethnic group (the predominant ethnic group in the study area), regular job, first and second pregnancy, higher baseline pVL and impaired adherence to ART were negative factors whereas higher weight, higher antenatal care attendance and longer ART duration were favorable factors to achieve virologic suppression.
This study provides more evidence that ART has to be initiated before the last trimester of pregnancy to achieve an undetectable pVL before delivery. In Benin, new recommendations supporting early initiation were well implemented and, together with a high antenatal care attendance, led to high rate of virologic control.
Journal Article
Low implementation of Xpert MTB/RIF among HIV/TB co-infected adults in the International epidemiologic Databases to Evaluate AIDS (IeDEA) program
by
Zannou, Djimon Marcel
,
Carriquiry, Gabriela
,
Pettit, April
in
Acquired immune deficiency syndrome
,
Acquired Immunodeficiency Syndrome - complications
,
Acquired Immunodeficiency Syndrome - epidemiology
2017
Xpert MTB/RIF is recommended by the World Health Organization (WHO) as the initial tuberculosis (TB) diagnostic test in individuals suspected of HIV-associated TB. We sought to evaluate field implementation of Xpert among a cohort of HIV/TB co-infected individuals, including availability, utilization and outcomes.
Observational cohort study (patient-level data) and cross-sectional study (site-level Xpert availability data).
Data were collected at 30 participating International epidemiologic Databases to Evaluate AIDS (IeDEA) sites in 18 countries from January 2012-January 2016. All patients were HIV-infected and diagnosed with TB, either bacteriologically or clinically, and followed until a determination of TB treatment outcome. We used multivariable modified Poisson regression to estimate adjusted relative risk (RR) and 95% confidence intervals for unfavorable TB treatment outcomes.
Most sites (63%) had access to Xpert, either in the clinic (13%), in the same facility (20%) or offsite (30%). Among 2722 HIV/TB patients included, median age was 35.4 years and 41% were female; BMI and CD4 count were low. Overall, most patients (76%) received at least one TB test; 45% were positive. Only 4% of all patients were tested using Xpert: 64% were Xpert-positive, 13% showed rifampicin (RIF) resistance and 30% were extrapulmonary (EPTB) or both pulmonary-EPTB. Treatment outcomes were mostly favorable (77%) and we found little association between Xpert use and an unfavorable TB treatment outcome (RR 1.25, 95%CI: 0.83, 1.90).
In this cohort, Xpert utilization was low even though the majority of sites had access to the test. Our findings show the need for expanded implementation and further research exploring barriers to use in low-resource settings.
Journal Article
Prevalence and determinants of high-risk human papilloma virus among men who have sex with men in Benin: a cross-sectional study embedded in a demonstration project on pre-exposure prophylaxis against HIV
by
Chagas, Elyote
,
Dossouvo, Alban
,
Zannou, Djimon Marcel
in
Antiretroviral drugs
,
Cancer
,
Cross-sectional studies
2023
ObjectivesThis study aims to assess the prevalence and factors associated with anal high-risk human papilloma virus (HR-HPV).DesignA cross-sectional study conducted from 24 August 2020 to 24 November 2020.SettingPrimary care, Cotonou, Benin.Participants204 HIV-negative men who have sex with men initiating oral pre-exposure prophylaxis.Primary outcome measureAnal HR-HPV genotypes using GeneXpert HPV assay. Fourteen HR-HPV were evaluated: HPV-16 and HPV-18/45 in 2 distinct channels and the 11 other genotypes as a pooled result (31, 33, 35, 39, 51, 52, 56, 58, 59, 66 and 68). The potential independent variables analysed included anal gonorrhoea and chlamydia infections, and sociodemographic and sexual behaviour factors. To assess the determinants of HR-HPV, univariate and multivariate Poisson regression models were performed by using SAS V.9.4.ResultsMean age±SD was 25.9±4.8 years. 131/204 men claimed insertive sex procured more pleasure. Thirty-two participants, accounting for 15.7% of the study sample, had gonorrhoea and/or chlamydia. The prevalence of any HR-HPV genotype was 36.3% (95% CI 30.0% to 43.0%). In total, 7.8% of men had HPV-16 and 7.4% had HPV-18/45. The prevalence for the pooled genotypes (31, 33, 35, 39, 51, 52, 56, 58, 59, 66 and 68) was 29.9%. Receptive anal sex during the last 6 months was strongly associated with prevalent HR-HPV infections. The adjusted proportion ratio (aPR) was 1.93 (95% CI 1.31 to 2.83). Gonorrhoea and chlamydia were also associated with the outcome of interest; p value for both infections was <0.05. The aPR comparing patients who perceived some risk of acquiring HIV to other men was 1.44 (95% CI 1.00 to 2.08).ConclusionsIn Benin, anal HR-HPV was common among HIV-negative men who have sex with men. Among this highly vulnerable population, there is a need for integrated preventive and management strategies targeting HPV and other sexually transmitted infections.
Journal Article
Pre‐exposure prophylaxis in real life: experience from a prospective, observational and demonstration project among men who have sex with men in Benin, West Africa
by
Chagas, Elyote
,
Dossouvo, Alban
,
Akpaka, Axel
in
Acquired immune deficiency syndrome
,
Africa, Western - epidemiology
,
AIDS
2023
Introduction
Since many countries in sub‐Saharan Africa are willing to implement HIV oral pre‐exposure prophylaxis (PrEP) for men who have sex with men (MSM), data are needed to assess its feasibility and relevance in real life. The study objectives were to assess drug uptake, adherence, condom use and number of sexual partners, HIV incidence and trends in the prevalence of gonorrhoea and chlamydia.
Methods
In this oral PrEP demonstration study conducted prospectively in Benin, a combination of tenofovir disoproxil fumarate‐TDF 300 mg and emtricitabine‐FTC 200 mg (TDF‐FTC) was offered daily or on‐demand to MSM. Participants were recruited from 24 August to 24 November 2020 and followed over 12 months. At enrolment, month‐6 and month‐12, participants answered to a face‐to‐face questionnaire, underwent a physical examination and provided blood samples for HIV, gonorrhoea and chlamydia.
Results
Overall, 204 HIV‐negative men initiated PrEP. The majority of them (80%) started with daily PrEP. Retention rates at month‐3, 6, 9 and 12 were 96%, 88%, 86% and 85%, respectively. At month‐6 and month‐12, respectively, 49% and 51% of the men on daily PrEP achieved perfect adherence (self‐reported), that is seven pills taken during the last week. For event‐driven PrEP, the corresponding proportions for perfect adherence (last seven at‐risk sexual episodes covered) were 81% and 80%, respectively. The mean number (standard deviation) of male sexual partners over the last 6 months was 2.1 (1.70) at baseline and 1.5 (1.27) at month‐12 (p‐value for trend <0.001). Consistent condom use during the last 6 months was 34% (enrolment), 37% (month‐6) and 36% (month‐12). Three HIV seroconversions (2‐daily and 1‐event‐driven) were recorded. Crude HIV incidence (95% confidence interval) was 1.53 (0.31−4.50)/100 person‐years. Neisseria gonorrhoeae and/or Chlamydia trachomatis prevalence at the anal and/or pharyngeal and/or urethral sites was 28% at baseline and 18% at month‐12 (p‐value = 0.017).
Conclusions
In West Africa, oral PrEP introduction in routine practice as a component of a holistic HIV prevention package is feasible and may not result in a significant increase in condomless sex among MSM. Since HIV incidence was still higher, additional interventions, such as culturally tailored adherence counselling, may be needed to optimize the benefits of PrEP.
Journal Article
HIV treatment response among female sex workers participating in a treatment as prevention demonstration project in Cotonou, Benin
2020
Female sex workers (FSWs) play a key role in HIV transmission in West Africa, while they have limited access to antiretroviral therapy (ART). In line with UNAIDS recommendations extending ART to all HIV-infected individuals, we conducted this demonstration project on immediate treatment as prevention (TasP) among FSWs in Cotonou, Benin. We report data on treatment response and its relation to adherence, as well as on ART-resistant genotypes.
Complete follow-up varied between 12 and 24 months. At each three-monthly visit, a questionnaire was administered, clinical examinations were carried out and blood samples collected. Adherence to treatment was estimated by self-report. Viral RNA was genotyped at baseline and final visits for drug resistance. Generalized estimating equations for repeated measures with a log-binomial link were used to analyze time trends and the association between adherence and virological response to treatment.
One-hundred-seven HIV-positive and ART-naive FSWs were enrolled; 59.8% remained in the cohort till study completion and 62.6% had a final visit. Viral load<1000 (below quantification limit [<50]) was attained in 73.1% (64.6%) of participants at month-6, 84.8% (71.2%) at month-12, and 80.9% (65.1%) at the final visit. The proportion of women with suppressed (below quantification limit) viral load increased with increasing self-reported adherence (p = 0.06 (0.003), tests for trend). The proportion of participants with CD4≤500 also decreased drastically throughout follow-up (p < .0001). Twelve participants exhibited ART-resistant genotypes at baseline, but only two at their final visit.
Our findings indicate that TasP is widely accepted among FSWs in Cotonou and could be implemented with relative success. However, due to mobility in this population, follow-up was sub-optimal, suggesting that large geographical coverage of FSW-friendly clinics is needed for sustained treatment implementation. We also fell short of the UNAIDS objective of 90% viral suppression among treated patients, underlining the need for better adherence support programs.
Journal Article
Palliative care progress in Benin: a situation analysis using the WHO development indicators
2024
Context
Palliative care (PC) in most African countries remains under-assessed. Benin has piloted the implementation of a set of indicators proposed by the WHO to measure PC development.
Objectives
To examine the current status of PC in Benin.
Methods
A workshop with stakeholders was organized to assess the WHO indicators in the Beninese context. Indicators were rated based on relevance and feasibility, data sources were agreed upon, and a survey was adapted. Data were collected between March and May 2023.
Results
There is emerging community involvement in PC through the presence of patients’ rights promoters, as well as a political commitment expressed in the National PC strategy, the inclusion of PC services in the list of basic health services, and an assigned national authority –within the Ministry of Health–responsible for PC. Although no PC-oriented research has been documented, the celebration of the National PC Conference represents the first step to ground PC delivery in evidence. The reported annual consumption of opioids is 0.18 (ME) milligrams per capita, 34% of healthcare establishments have essential medicines for pain and PC, and 16.5% of patients with palliative needs have access to oral morphine. To date, no medical or paramedical schools offer PC training, and there is no official specialization in palliative medicine for doctors. PC is provided by 11 specialist teams (0.08/100,000 inhabitants), none of which provides pediatric care.
Conclusion
Despite growing political, professional, and community commitments to palliative care, there are challenges in education, research, essential medicines, and access to PC services.
Key message
This article describes the first macro-level assessment of the status of palliative care development in Benin. A set of indicators adopted by the World Health Organization has enabled an understanding of the gaps in education, essential medicines, and specialized services for an adequate provision of palliative care.
Journal Article
Overview and factors associated with pregnancies and abortions occurring in sex workers in Benin
by
Perrault Sullivan, Gentiane
,
Zannou, Djimon Marcel
,
Guédou, Fernand Aimé
in
Abortion
,
Abortion, Induced - statistics & numerical data
,
Adult
2020
Background
Behavioural and structural factors related to sex work, place female sex workers (FSWs) at high risk of maternal mortality and morbidity (MMM), with a large portion due to unintended pregnancies and abortions. In the African context where MMM is the highest in the world, understanding the frequency and determinants of pregnancy and abortion among FSWs is important in order to meet their sexual and reproductive health needs.
Methods
Data from two Beninese cross-sectional surveys among FSWs aged 18+ (2013,
N
= 450; 2016,
N
= 504) were merged. We first performed exploratory univariate analyses to identify factors associated with pregnancy and abortion (
p
< 0.20) using Generalized Estimating Equations with Poisson regression and robust variance. Multivariate analyses first included all variables identified in the univariate models and backward selection (
p
≤ 0.05) was used to generate the final models.
Results
Median age was 39 years (
N
= 866). The proportion of FSWs reporting at least one pregnancy during sex work practice was 16.4%, of whom 42.3% had more than one. Most pregnancies ended with an abortion (67.6%). In multivariate analyses, younger age, longer duration in sex work, previous HIV testing, having a boyfriend and not using condoms with him were significantly (
p
< 0.05) associated with more pregnancies.
Conclusion
One FSW out of five had at least one pregnancy during her sex work practice. Most of those pregnancies, regardless of their origin, ended with an abortion. Improving access to various forms of contraception and safe abortion is the key to reducing unintended pregnancies and consequently, MMM among FSWs in Benin.
Journal Article
P701 Time trends in prevalence and incidence of HIV, gonorrhea and chlamydia among female sex workers in benin, 2008–2018
2019
BackgroundThe conduction of 3 cohort studies among professional female sex workers (FSWs), e.g. women whose main source of revenue is sex work, since 2008 in Benin allowed the estimation of time trends in HIV, gonorrhea and chlamydia prevalence and incidence in this key population over the last decade.MethodsThe 3 cohort studies were conducted from 09/2008-03/2012, 10/2014-12/2016 and 04/2017-09/2018, respectively. Women were recruited at the Dispensaire IST, a FSW-dedicated clinic, after providing informed consent. Follow-up was quarterly in the first 2 studies and bi-annual in the latest one. FSWs were tested for HIV (rapid test with confirmatory assay according to Benin guidelines), gonorrhea and chlamydia (BD ProbeTec™ CT/NG, Becton Dickinson Inc.) at baseline and at each follow-up for HIV and semi-annually for gonorrhea and chlamydia. Questionnaires were administered.ResultsIn all studies, median age was 32–33 years and the proportion of women not born in Benin 50–60%. HIV [gonorrhea (chlamydia)] prevalence was 37.1% [4.3% (3.5%)] in 2008 (n=396), 29.1% [9.7% (4.8%)] in 2014 (n=361) and 26.0% [13.8% (7.4%)] in 2017 (n=312). There was a significant downward (upward) trend in HIV (gonorrhea and chlamydia) prevalence: p<0.001 (p<0.001 and p=0.03). Among respectively 319, 299 and 213 women with follow-up, gonorrhea (chlamydia) incidence was 8.9 (2.1), 9.0 (4.6) and 14.8 (5.8) per 100 person-years; p=0.07(p=0.003). HIV incidence was 1.4, 0.8 and 0.7 per 100 person-years in 2008–12, 2014–16 and 2017–18, respectively (p=0.41).ConclusionHIV prevalence is decreasing, but still high, whereas HIV incidence is low in this highly mobile key population. This combination of high prevalence and low incidence is likely due to HIV treatment scale-up over the last decade, including the adoption of an HIV “test and treat” strategy since 2016 in Benin. However, the increase in both gonorrhea and chlamydia is worrying and calls for renewed control strategies for these curable infections.DisclosureNo significant relationships.
Journal Article
Positive Impact of Increases in Condom Use among Female Sex Workers and Clients in a Medium HIV Prevalence Epidemic: Modelling Results from Project SIDA1/2/3 in Cotonou, Benin
by
Ahoussinou, Clément
,
Zannou, Djimon Marcel
,
Minani, Isaac
in
Acquired immune deficiency syndrome
,
Adolescent
,
Adult
2014
A comprehensive, HIV prevention programme (Projet Sida1/2/3) was implemented among female sex workers (FSWs) in Cotonou, Benin, in 1993 following which condom use among FSWs increased threefold between 1993 and 2008 while FSW HIV prevalence declined from 53.3% to 30.4%.
Estimate the potential impact of the intervention on HIV prevalence/incidence in FSWs, clients and the general population in Cotonou, Benin.
A transmission dynamics model parameterised with setting-specific bio-behavioural data was used within a Bayesian framework to fit the model and simulate HIV transmission in the high and low-risk population of Cotonou and to estimate HIV incidence and infections averted by SIDA1/2/3. Our model results suggest that prior to SIDA1/2/3 commercial sex had contributed directly or indirectly to 93% (84-98%) of all cumulative infections and that the observed decline in FSWs HIV prevalence was more consistent with the self-reported post-intervention increase in condom use by FSWs than a counterfactual assuming no change in condom use after 1993 (CF-1). Compared to the counterfactual (CF-1), the increase in condom use may have prevented 62% (52-71%) of new HIV infections among FSWs between 1993 and 2008 and 33% (20-46%) in the overall population.
Our analysis provides plausible evidence that the post-intervention increase in condom use during commercial sex significantly reduced HIV prevalence and incidence among FSWs and general population. Sex worker interventions can be effective even in medium HIV prevalence epidemics and need to be sustained over the long-term.
Journal Article