Occult hepatitis B virus infection (OBI) is characterised by the persistence of hepatitis B virus (HBV) genome in the liver, without any evidence of overt infection: without HBV surface antigen (HBsAg) and HBV DNA detectable in the serum, or fugacious spots of very low levels of viraemia. OBI, a possible phase in the natural history of chronic hepatitis B, is mainly due to the strong suppressio...

Hepatitis B is one of the most common infectious diseases globally. It has been estimated that there are 350 million chronic hepatitis B virus (HBV) carriers worldwide. The prevalence of chronic HBV infection varies geographically, from high (>8%), intermediate (2-7%) to low (<2%) prevalence. HBeAg-negative chronic hepatitis B (e-CHB) and occult HBV infection are two special clinical entities, ...

conclusions based on our results, it seems that there were no cases of obi among chronic hcv-infected patients with thalassemia and bleeding disorders, particularly hemophilia. however, to improve decisions concerning obi screening, especially in transfusion centers, and concerning the use of comprehensive screening methods, more original studies with more precise laboratory techniques and larg...

Volunteer blood donors are screened for hepatitis B virus (HBV), hepatitis C virus (HCV), and human immunodeficiency virus (HIV) infection by various immunoassay methods in Turkey. The risk of enzyme immunoassay (EIA) negative and positive nucleic acid amplification technology (NAT) samples is not clearly understood yet. The purpose of this study is to screen for such donors in Turkey by a comm...

nowadays, the presence of hbv dna in the absence of hbsag; occult hepatitis b infection; (obi), is a known clinical entity along with the rapid influx of research being conducted on  its clinical relevance. biologists and clinicians alike have a recent-standing interest in this regards. obi has been described in several clinical settings. however, the data on its prevalence among immunized and ...

background: the north eastern region in india is endemic for canine heartworm disease but in clinics accurate diagnosis is some times difficult. the aim of the present study was to determine the prevalence of occult infections for heartworm disease in canine in two geographical regions of north eastern india. methods : a total of 782 numbers of three categories of dogs namely, working dogs of m...