This open-access article is distributed under Creative Commons licence CC-BY-NC 4.0. RESEARCH Prevalence of hepatitis B, hepatitis C and human immunodeficiency viruses, and evaluation of risk factors for transmission: Report of a population screening in Nigeria U C Okonkwo,1 MD, FWACP, FMCP; H Okpara,2 MD, MPH, FMCPath; A Otu,3 MD, MPH, FWACP; S Ameh,4 MD, MPH, FMCPH, FWACP; Y Ogarekpe,2 MD; H Osim,1 MD; M Inyama,5 MD, FMCPath 1 Gastroenterology/Hepatology Unit, Department of Internal Medicine, University of Calabar Teaching Hospital, Cross River State, Nigeria 2 Department of Chemical Pathology, University of Calabar Teaching Hospital, Cross River State, Nigeria 3 Infectious Disease Unit, Department of Internal Medicine, University of Calabar Teaching Hospital, Cross River State, Nigeria 4 Department of Community Medicine, University of Calabar Teaching Hospital, Cross River State, Nigeria 5 Department of Haematology, University of Calabar Teaching Hospital, Cross River State, Nigeria Corresponding author: U C Okonkwo (
[email protected]) Background. Hepatitis B virus (HBV), hepatitis C virus (HCV) and HIV are common blood-borne infections unevenly distributed across regions in Nigeria. Few population-based prevalence studies have been done in Nigeria. Objective. To determine the prevalence of HBV, HCV and HIV and risk factors for infection with these viruses in a Nigerian population. Methods. Hepatitis B surface antigen, anti-HCV and HIV were assayed in 1 498 healthy adult participants. A structured questionnaire was used to assess risk factors for viral acquisition. Bivariate analysis was used to compare differences in sociodemographic characteristics. Significant risk factors were identified by stepwise logistic regression.