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© Research
Publication : The Journal of infectious diseases

Prevalence and clinical significance of occult hepatitis B infection in The Gambia, West Africa.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in The Journal of infectious diseases - 23 Jun 2021

Ndow G, Cessay A, Cohen D, Shimakawa Y, Gore ML, Tamba S, Ghosh S, Sanneh B, Baldeh I, Njie R, D'Alessandro U, Mendy M, Thursz M, Chemin I, Lemoine M,

Link to Pubmed [PMID] – 34160616

Link to DOI – jiab32710.1093/infdis/jiab327

J Infect Dis 2021 Jun; ():

Prevalence of occult hepatitis B infection (OBI) and its clinical outcomes have been poorly studied in Africa.Using the PROLIFICA cohort, we compared the prevalence of OBI between HBsAg-negative healthy adults screened from the general population (controls) and HBsAg-negative patients with advanced liver disease (cases) and estimated the population attributable fraction for the effect of OBI on advanced liver disease.OBI prevalence was significantly higher among the cases (15/82, 18.3%) than in the control group (31/330, 9.4%, p=0.03). Among participants with OBI, pre-S2 mutations were detected in 5/31 (16.1%) controls and 3/14 (21.4%) cases (p=0.7).After adjusting for age, sex, and anti-HCV serology, OBI was significantly associated with advanced liver disease [OR: 2.8 (95% CI: 1.3-6.0), p=0.006]. In HBsAg-negative people, the proportions of advanced liver disease cases attributable to OBI and HCV were estimated at 12.9% (7.5-18.1%) and 16.9% (15.2-18.6%), respectively.OBI is endemic and an independent risk factor of advanced liver disease in The Gambia, West Africa. This implies that HBsAg-negative people with liver disease should be systematically screened for OBI. Moreover, the impact of infant hepatitis B immunization to prevent end-stage liver disease might be higher than previous estimates based solely on HBsAg-positivity.

https://pubmed.ncbi.nlm.nih.gov/34160616