Molecular Epidemiology, Drug-Resistant Variants, and Therapeutic Implications of Hepatitis B Virus and Hepatitis D Virus Prevalence in Nigeria: A National Study

Molecular Epidemiology, Drug-Resistant Variants, and Therapeutic Implications of Hepatitis B Virus and Hepatitis D Virus Prevalence in Nigeria: A National Study

Information on circulating HBV (sub-)genotype, variants, and hepatitis D virus (HDV) coinfection, which vary by geographical area, is crucial for the efficient control and management of HBV. We investigated the genomic characteristics of HBV (with a prevalence of 8.1%) and the prevalence of HDV in N...

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Main Authors: Oludare ‘Sunbo Adewuyi, Muhammad Shakir Balogun, Hirono Otomaru, Alash’le Abimiku, Anthony Agbakizu Ahumibe, Elsie Ilori, Que Anh Luong, Nwando Mba, James Christopher Avong, John Olaide, Oyeladun Okunromade, Adama Ahmad, Afolabi Akinpelu, Chinwe Lucia Ochu, Babatunde Olajumoke, Haruka Abe, Chikwe Ihekweazu, Adetifa Ifedayo, Michiko Toizumi, Hiroyuki Moriuchi, Katsunori Yanagihara, Jide Idris, Lay-Myint Yoshida
Format: Article
Language:English
Published: MDPI AG 2025-01-01
Series:Pathogens
Subjects:
HBV
genotypes
viral load
HDV
drug-resistant associated variants
Nigeria
Online Access:https://www.mdpi.com/2076-0817/14/1/101
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Summary:Information on circulating HBV (sub-)genotype, variants, and hepatitis D virus (HDV) coinfection, which vary by geographical area, is crucial for the efficient control and management of HBV. We investigated the genomic characteristics of HBV (with a prevalence of 8.1%) and the prevalence of HDV in Nigeria. We utilised 777 HBV-positive samples and epidemiological data from the two-stage sampled population-based, nationally representative Nigeria HIV/AIDS Indicator and Impact Survey conducted in 2018. We assessed 732 HBV DNA-extracted samples with detectable viral loads (VLs) for (sub-)genotypes and variants by whole-genome pre-amplification, nested PCR of the <i>s</i>-and <i>pol</i>-gene, and BigDye Terminator sequencing. We conducted HDV serology. In total, 19 out of the 36 + 1 states in Nigeria had a high prevalence of HBV (≥8%), with the highest prevalence (10.4%) in the north-central geopolitical zone. Up to 33.2% (95% CI 30.0–36.6) of the participants had detectable VLs of ≥300 copies/mL. The predominant circulating HBV genotype was E with 98.4% (95% CI 97.1–99.1), followed by A with 1.6% (95% CI 0.9–2.9). Drug-resistant associated variants and immune escape variants were detected in 9.3% and 0.4%, respectively. The seroprevalence of HDV was 7.34% (95% CI 5.5–9.2). Nigeria has subtype E as the major genotype with many variants.
ISSN:2076-0817

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