| the prevalence of hepatitis b surface antigenaemia in hiv positive patients in the niger delta nigeria. | both hepatitis-b virus (hbv) and human immunodeficiency virus (hiv) infections are common in nigeria and are a significant cause of mortality and morbidity. this study was undertaken to determine the prevalence of hepatitis b surface antigen (hbsag) in hiv infected patients and to highlight the need to pay attention to the recognition of potentially severe concurrent illness that may increase morbidity and mortality of hiv infected patients. | 2004 | 15293840 |