scholarly journals Hepatitis B Virus Prevalence and Vaccination in Men Who Have Sex With Men in West Africa (CohMSM ANRS 12324—Expertise France)

2019 ◽  
Vol 6 (7) ◽  
Author(s):  
Ter Tiero Elias Dah ◽  
Clotilde Couderc ◽  
Alou Coulibaly ◽  
Malan Jean-Baptiste kouamé ◽  
Mawuényégan Kouamivi Agboyibor ◽  
...  
Keyword(s):  
Hepatitis B Virus ◽  
Hepatitis B ◽  
West Africa ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Hbv Infection ◽  
Cote D’Ivoire ◽  
B Virus ◽  
Hbv Prevalence ◽  
Sex With Men

AbstractBackgroundAlthough men who have sex with men (MSM) are at high risk of hepatitis B virus (HBV) infection, they do not have access to vaccination in West Africa, which is a highly endemic region. We investigated HBV prevalence and associated factors, as well as acceptability and difficulties of vaccination in MSM enrolled in an operational research program in Burkina Faso, Côte d’Ivoire, Mali, and Togo.MethodsWe followed up 779 MSM in 2015–2018. Participants who were negative for both hepatitis B surface antigen (HBsAg) and antibodies (anti-HBs) at enrollment were offered HBV vaccination. Factors associated with HBV infection were identified using logistic regression models.ResultsOverall, HBV prevalence was 11.2% (95% confidence interval [CI], 9.0%–13.6%). It was lower in Togo than in Côte d’Ivoire (2.7% vs 17.3%; adjusted odds ratio [aOR], 0.12; 95% CI, 0.02–0.28) and higher in participants with 6+ recent male sexual partners (21.0% vs 9.3%; aOR, 1.48; 95% CI, 1.12–1.97). Of 528 participants eligible for vaccination, 484 (91.7%) were willing to be vaccinated and received at least 1 dose (ranging from 68.2% in Abidjan to 96.4% in Bamako; P < .001). Of the latter, 390 (80.6%) received 3 or 4 doses. The proportion of participants for whom the minimum required time between each dose was respected ranged from 10.9% in Bamako to 88.6% in Lomé (P < .001).ConclusionsMSM in West Africa should be targeted more for HBV screening and vaccination. Although vaccination is well accepted by MSM, greater training of health care workers and education of MSM are required.

CD4+ T Cell Recovery and Hepatitis B Virus Coinfection in HIV-Infected Patients from Côte d'Ivoire Initiating Antiretroviral Therapy

2018 ◽  
Vol 34 (5) ◽  
pp. 439-445
Author(s):  
Laura Houghtaling ◽  
Raoul Moh ◽  
Mariama Abdou Chekaraou ◽  
Delphine Gabillard ◽  
Xavier Anglaret ◽  
...  
Keyword(s):  
Hepatitis B Virus ◽  
T Cell ◽  
Antiretroviral Therapy ◽  
Hepatitis B ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Cd4 T Cell ◽  
Cell Recovery ◽  
Cote D’Ivoire ◽  
B Virus

scholarly journals Hepatitis B virus infection among men who have sex with men and transgender women living with or at risk for HIV: A cross sectional study in Abuja and Lagos, Nigeria.

2020 ◽  
Author(s):  
Olusegun A. ADEYEMI ◽  
Andrew MITCHELL ◽  
Ashley SHUTT ◽  
Trevor A. CROWELL ◽  
Nicaise NDEMBI ◽  
...  
Keyword(s):  
Hepatitis B Virus ◽  
Hepatitis B ◽  
Transgender Women ◽  
Hbv Infection ◽  
Sub Saharan Africa ◽  
Condomless Sex ◽  
B Virus ◽  
Hbv Prevalence ◽  
Sex With Men ◽  
Living With Hiv

Abstract Background Despite the development of a safe and efficacious hepatitis B vaccine in 1982, the hepatitis B virus (HBV) remains a public health burden in sub-Saharan Africa. Due to shared risk factors for virus acquisition, men who have sex with men (MSM) and transgender women (TGW) living with HIV are at increased risk of HBV. We estimated the prevalence of HBV and associated factors for MSM and TGW living with or without HIV in Nigeria. Methods Since March 2013, TRUST/RV368 has recruited MSM and TGW in Abuja and Lagos, Nigeria using respondent driven sampling. Participants with HIV diagnosis, enrollment as of June 2015, and available plasma were retrospectively tested for hepatitis B surface antigen and HBV DNA. Logistic regression models were used to estimate odds ratios (ORs) and 95% confidence intervals (CIs) for factors associated with prevalent HBV infection. Results A total of 717 MSM and TGW had a median age of 25 years (interquartile range [IQR]: 21-27), 5% self-reported HBV vaccination, 61% were living with HIV, 10% had prevalent HBV infection and 6% were HIV-HBV co-infected. HIV mono-infected as compared to HIV-HBV co-infected had a higher median CD4 T cell count [425 (IQR: 284-541) vs. 345 (IQR: 164-363) cells/mm 3 , p=0.03] and a lower median HIV RNA viral load [4.2 (IQR: 2.3-4.9) vs. 4.7 (IQR: 3.9-5.4) log 10 copies/mL, p<0.01]. The only factor independently associated with HBV was self-report of condomless sex at last anal intercourse (OR: 2.2, 95% CI: 1.3, 3.6). HIV infection was not independently associated with HBV (OR: 1.0, 95% CI: 0.7-1.6). Conclusion HBV prevalence was moderately high but did not differ by HIV in this cohort of MSM and TGW. Condomless sex was associated with elevated HBV risk, reinforcing the need to increase communication and education on condom use among key populations in Nigeria. Evaluating use of concurrent HIV antiretroviral therapy with anti-HBV activity may confirm the attenuated HBV prevalence for those living with HIV.

scholarly journals Hepatitis B virus infection among men who have sex with men and transgender women living with or at risk for HIV: a cross sectional study in Abuja and Lagos, Nigeria

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Olusegun A. Adeyemi ◽  
Andrew Mitchell ◽  
Ashley Shutt ◽  
Trevor A. Crowell ◽  
Nicaise Ndembi ◽  
...  
Keyword(s):  
Hepatitis B Virus ◽  
Hepatitis B ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Condomless Sex ◽  
B Virus ◽  
Hbv Prevalence ◽  
Sex With Men ◽  
Living With Hiv

Abstract Background Despite the development of a safe and efficacious hepatitis B vaccine in 1982, the hepatitis B virus (HBV) remains a public health burden in sub-Saharan Africa. Due to shared risk factors for virus acquisition, men who have sex with men (MSM) and transgender women (TGW) living with HIV are at increased risk of HBV. We estimated the prevalence of HBV and associated factors for MSM and TGW living with or without HIV in Nigeria. Methods Since March 2013, TRUST/RV368 has recruited MSM and TGW in Abuja and Lagos, Nigeria using respondent driven sampling. Participants with HIV diagnosis, enrollment as of June 2015, and available plasma were selected for a cross-sectional study and retrospectively tested for hepatitis B surface antigen and HBV DNA. Logistic regression models were used to estimate odds ratios (ORs) and 95% confidence intervals (CIs) for factors associated with prevalent HBV infection. Results A total of 717 MSM and TGW had a median age of 25 years (interquartile range [IQR]: 21–27), 5% self-reported HBV vaccination, 61% were living with HIV, 10% had prevalent HBV infection and 6% were HIV-HBV co-infected. HIV mono-infected as compared to HIV-HBV co-infected had a higher median CD4 T cell count [425 (IQR: 284–541) vs. 345 (IQR: 164–363) cells/mm3, p = 0.03] and a lower median HIV RNA viral load [4.2 (IQR: 2.3–4.9) vs. 4.7 (IQR: 3.9–5.4) log10copies/mL, p < 0.01]. The only factor independently associated with HBV was self-report of condomless sex at last anal intercourse (OR: 2.2, 95% CI: 1.3, 3.6). HIV infection was not independently associated with HBV (OR: 1.0, 95% CI: 0.7–1.6). Conclusion HBV prevalence was moderately high but did not differ by HIV in this cohort of MSM and TGW. Recent condomless sex was associated with elevated HBV risk, reinforcing the need to increase communication and education on condom use among key populations in Nigeria. Evaluating use of concurrent HIV antiretroviral therapy with anti-HBV activity may confirm the attenuated HBV prevalence for those living with HIV.

scholarly journals Epidemiology of Hepatitis B Virus Infection in Bangladesh: Prevalence among General Population, Risk Groups and Genotype Distribution

Genes ◽  
2018 ◽  
Vol 9 (11) ◽  
pp. 541 ◽  
Author(s):  
Md. uz-Zaman ◽  
Ayesha Rahman ◽  
Mahmuda Yasmin
Keyword(s):  
Hepatitis B Virus ◽  
General Population ◽  
Hepatitis B ◽  
Horizontal Transmission ◽  
Risk Groups ◽  
Hbv Infection ◽  
Present Review ◽  
Genotype Distribution ◽  
B Virus ◽  
Hbv Prevalence

Despite a considerable body of published research on hepatitis B in Bangladesh, researchers continue to lament the lack of reliable information about hepatitis B virus (HBV) infection epidemiology. The present review aims to provide a comprehensive survey of the literature with particular focus on a number of epidemiological questions, as well as a commentary on the trends of hepatitis B research as it has taken place in Bangladesh. The key themes to emerge from this review are: first, beyond noting a declining trend, it is difficult to provide conclusive estimates about HBV prevalence in the general population of Bangladesh. The majority of the studies, even the ones conducted on apparently healthy populations, fail to be adequately representative for the reasons explored in the article. Secondly, HBV infection in Bangladesh is sharply stratified across sociodemographic lines, which speaks to the role of awareness and risk exposure in HBV prevalence. Third, more research on occult infection rates is required to estimate the extent of risk posed by the current blood donation screening program, which relies exclusively on hepatitis B surface antigen as a biomarker. The same considerations apply for the comparative importance of vertical versus horizontal transmission and prevalence among particular risk groups like healthcare workers with high occupational exposure. Finally, while recent studies do allow us, albeit with some ambiguity, to draw conclusions about distribution of HBV genotypes in Bangladesh, there needs to be an added emphasis on molecular epidemiology. It is hoped that the present review, the first of its kind in Bangladesh, will serve as an up-to-date summary of the course HBV epidemiology research in Bangladesh has taken thus far, as well as crucial gaps to address going forward.

scholarly journals Prevalence and predictors of hepatitis B virus (HBV) infection in east Africa: evidence from a systematic review and meta-analysis of epidemiological studies published from 2005 to 2020

2021 ◽  
Vol 79 (1) ◽  
Author(s):  
Hussein Mukasa Kafeero ◽  
Dorothy Ndagire ◽  
Ponsiano Ocama ◽  
Ali Kudamba ◽  
Abdul Walusansa ◽  
...  
Keyword(s):  
Hepatitis B Virus ◽  
Blood Transfusion ◽  
Hepatitis B ◽  
Meta Analysis ◽  
Hbv Infection ◽  
Research Articles ◽  
B Virus ◽  
Hbv Prevalence ◽  
Male Sex ◽  
Published Research

Abstract Background The epidemiology of hepatitis B virus (HBV) in the general population in east Africa is not well documented. In this meta-analysis, we examined 37 full published research articles to synthesise up-to-date data on the prevalence and predictors of the HBV burden for the effective prevention and management of the virus in our region. Methods We examined 37 full published research articles found using PubMed, Scopus, African Journal Online (AJOL), and Google Scholar between May and October 2020. Dichotomous data on HBV prevalence and predictors of infection were extracted from the individual studies. The HBV prevalence, test of proportion, relative risk, and I2 statistics for heterogeneity were calculated using MedCalc software version 19.1.3. Begg’s tests was used to test for publication bias. Sources of heterogeneity were analysed through sensitivity analysis, meta-regression, and sub-group analysis at 95% CI. P < 0.05 was considered significant for all analyses. Results The prevalence of HBV was generally high (6.025%), with publications from Kenya (8.54%), Uganda (8.454%) and those from between 2011 and 2015 (8.759%) reporting the highest prevalence (P < 0.05). Blood transfusion, scarification, promiscuity, HIV seropositivity, and being male were independent predictors significantly associated with HBV infection (P < 0.05), with the male sex being the most strongly associated predictor of HBV infection. Meta-regressions for the pooled HBV prevalence and sample size, as well as the year of publication, lacked statistical significance (P > 0.05). Omitting the study with the largest sample size slightly increased pooled HBV prevalence to 6.149%, suggesting that the studies are robust. Begg’s test showed no evidence of publication bias for overall meta-analysis (p > 0.05). Conclusion The burden of HBV is still high, with the male sex, blood transfusion, body scarification, and HIV seropositivity being potential predictors of infection. Thus, it is important to scale up control and prevention measures targeting persons at high risk.

scholarly journals Hepatitis B virus infection among people who use drugs in Iran: a systematic review, meta-analysis, and trend analysis

2020 ◽  
Vol 17 (1) ◽  
Author(s):  
Yasna Rostam-Abadi ◽  
Hossein Rafiemanesh ◽  
Jaleh Gholami ◽  
Behrang Shadloo ◽  
Masoumeh Amin-Esmaeili ◽  
...  
Keyword(s):  
Systematic Review ◽  
Hepatitis B Virus ◽  
Hepatitis B ◽  
Harm Reduction ◽  
Meta Analysis ◽  
Hbv Infection ◽  
People Who Use Drugs ◽  
Hbsag Prevalence ◽  
B Virus ◽  
Hbv Prevalence

Abstract Background People who use drugs (PWUD) are considered as one of the main at-risk populations for Hepatitis B virus (HBV) infection. We conducted a systematic review on the prevalence of HBV infection among PWUD in Iran. Methods Consistent with PRISMA guideline, international (Medline, Web of Science, Scopus, and Embase) and national (Scientific Information Database) databases were searched using a comprehensive search strategy up to September 2019. The retrieved records were reviewed, and experts were contacted for unpublished studies. Studies on Iranian PWUD reporting HBV surface Antigen (HBsAg) prevalence among people who inject drugs (PWID) and non-injecting PWUD were included. HBsAg prevalence was pooled for PWID and non-injecting PWUD and for other subgroups using random-effects model meta-analysis. The trend of HBV prevalence over time was investigated using meta-regression analysis. Results Overall, 35 studies reported data on HBV infection among PWID (33 studies) and non-injecting PWUD (11 studies). The pooled prevalence of HBsAg among PWID was 4.8% (95% CI 3.7–6.2). The only risk factor significantly associated with the odds of positive HBsAg in PWID was the previous history of imprisonment (OR 1.72, 95% CI 1.29–2.30, p value = 0.000). The pooled estimate of HBsAg among non-injecting PWUD was 2.9% (95% CI 2.5–3.2). Time trend analyses showed significant decrease in HBV prevalence among PWID reaching from 8.2% (95% CI 3.9–16.5) in 2004–2006 to 3.1% (95% CI 2.3–4.1) in 2016 and later (b = -0.07; p value = 0.05). No significant trend was detected for non-injecting PWUD. Conclusion The prevalence of HBV infection among non-injecting PWUD and even PWID was not considerably higher than the Iranian general population. This might be the result of extensive harm reduction interventions in Iran. However, it seems that there are subgroups of PWID, who do not adequately benefit from existing harm reduction interventions. Future programs should more specifically target these high-risk groups.

Hepatitis B Virus (HBV) Infection, Immunity and Susceptibility Among Men Who Have Sex with Men (MSM), Los Angeles County, USA

2013 ◽  
Vol 18 (S3) ◽  
pp. 248-255 ◽  
Author(s):  
Marc A. Pitasi ◽  
Trista A. Bingham ◽  
Ekow Kwa Sey ◽  
Amanda J. Smith ◽  
Eyasu H. Teshale
Keyword(s):  
Hepatitis B Virus ◽  
Los Angeles ◽  
Hepatitis B ◽  
Los Angeles County ◽  
Hbv Infection ◽  
B Virus ◽  
Sex With Men

How Far we are towards Eradication of HBV Infection

2015 ◽  
Vol 24 (4) ◽  
pp. 473-479 ◽  
Author(s):  
Mihai Voiculescu
Keyword(s):  
Immune Response ◽  
Hepatitis B Virus ◽  
T Cell ◽  
Hepatitis B ◽  
T Cell Receptors ◽  
Hepatitis B Surface Antigen ◽  
Hbv Infection ◽  
Major Health Problem ◽  
Cell Receptors ◽  
B Virus

Hepatitis B virus (HBV) infection is a major health problem with an important biological and a significant socio-economic impact all over the world. There is a high pressure to come up with a new and more efficient strategy against HBV infection, especially after the recent success of HCV treatment. Preventing HBV infection through vaccine is currently the most efficient way to decrease HBV-related cirrhosis and liver cancer incidence, as well as the best way to suppress the HBV reservoir. The vaccine is safe and efficient in 80-95% of cases. One of its most important roles is to reduce materno-fetal transmission, by giving the first dose of vaccine in the first 24 hours after birth. Transmission of HBV infection early in life is still frequent, especially in countries with high endemicity.Successful HBV clearance by the host is immune-mediated, with a complex combined innate and adaptive cellular and humoral immune response. Different factors, such as the quantity and the sequence of HBV epitope during processing by dendritic cells and presenting by different HLA molecules or the polymorphism of T cell receptors (TOL) are part of a complex network which influences the final response. A new potential therapeutic strategy is to restore T-cell antiviral function and to improve innate and adaptive immune response by immunotherapeutic manipulation.It appears that HBV eradication is far from being completed in the next decades, and a new strategy against HBV infection must be considered. Abbreviations: ALT: alanine aminotransferase; APC: antigen presenting cells; cccDNA: covalently closed circular DNA; HBIG: hepatitis B immunoglobulin; HbsAg: hepatitis B surface antigen; HBV: hepatitis B virus; HCC: hepatocellular carcinoma; CTL: cytotoxic T lymphocyte; IFN: interferon; NUC: nucleos(t)ide analogues; pg RNA: pre genomic RNA; TLR: toll-like receptors; TOL: T cell receptors.

Gianotti-Crosti syndrome associated with hepatitis B virus (HBV) infection in an adult: a case report

Kanzo ◽  
2010 ◽  
Vol 51 (11) ◽  
pp. 615-619
Author(s):  
Yuichi Honma ◽  
Masaru Harada ◽  
Masaaki Hiura ◽  
Ryoichi Narita ◽  
Shintaro Abe ◽  
...  
Keyword(s):  
Case Report ◽  
Hepatitis B Virus ◽  
Hepatitis B ◽  
Hbv Infection ◽  
B Virus
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