| occult hepatitis b infection in the immigrant population of sicily, italy. | in italy, about 7 % of the resident population is represented by immigrants originating from geographic regions at high endemicity for hepatitis b virus infection. this study aims to assess the prevalence of occult hbv infection (obi) including the identification of hbv-genotypes in a population of immigrants serologically negative for hepatitis b surface antigen (hbsag). between may 2006 and may 2010, 339 immigrants were tested for markers of hbv, hepatitis c virus (hcv) and human immunodeficie ... | 2013 | 22875279 |