Abstract
Nigeria remains one of the countries with a high hepatitis B virus (HBV) burden in Africa. Reports have indicated the presence of mixed HBV genotypes in Nigeria; however, there is still paucity of data regarding mixed genotype infections particularly in the Southern part of the country. Our aim is to determine the HBV genotype distribution among HBsAg-positive gastroenterology patients at the University College Hospital Ibadan, Nigeria. Serum samples were screened for HBsAg by ELISA, and positive samples were genotyped by semi-nested multiplex PCR for HBV genotypes A, B, C, D, E and F. Data generated were analyzed in R-studio. A total of 81/90 (90%) of HBsAg-positive samples were successfully genotyped, and genotype A was most prevalent with 15.7%, while genotypes B and E were the least with 1.2% each. Genotypes A/C infection was the highest among mixed infections with 40% prevalence, while genotypes A/D were the least prevalent mixed infection with 4.8%. We advocate for a comprehensive genotype analysis in larger cohorts across Nigeria, to give a more comprehensive understanding of the distribution and prevalence of different HBV genotypes population wide.
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