نتایج جستجو برای: occult hepatitis b infection

تعداد نتایج: 1345201  

Journal: :Antiviral therapy 2015
Margherita Macera Nicolina Capoluongo Michele Gambardella Mario Starace Carmine Minichini Mariantonietta Pisaturo Giuseppe Pasquale Nicola Coppola

It is still a matter of debate whether nucleoside/nucleotide analogues should be administered as prophylaxis to hepatitis B surface antigen (HBsAg)-negative/antibodies against hepatitis B core antigen (anti-HBc)-positive patients with immunosuppression or whether these patients should be closely monitored and early treatment administered to those who become HBsAg-positive. We describe a reactiv...

Background and Aims: Occult hepatitis B virus infection (OBI) is known as an important source of hepatitis B virus (HBV) infection. It is categorized as Hepatitis B surface antigen (HBsAg) not being present and low DNA viral load in serum. In this study, an attempt was made to investigate the outbreak of anti-HBc and OBI among the HBsAg-negative donors in Golestan province. Materials and Metho...

سلمان روغنی, حسن ,

Introduction: There are multiple reports of Acute Hepatitis B after blood transfusion inspite of good screening for Hepatitis B before transfusion. Therefore, occult hepatitis B is a serious concern for Blood transfusion. There is a lot of evidence that positive HBCAb in seronegative HBSAg blood donors is associated with occult Hepatitis B. Aim: Evaluation of the prevalence of HBCAb in seroneg...

2007
Michael A. Purdy

Hepatitis B virus (HBV) can be classified into nine immunological subtypes or eight genotypes. The most prevalent genotypes in Asia are genotypes B and C. HBV is transmitted parenteraly and can produce either asymptomatic or symptomatic disease. Although the consequences of acute hepatitis B can be severe, serious sequelae are associated with chronic infections. HBV seroprevalence ranges from i...

2014
Yong Liu Jian Wen Jie Chen Chenyu Xu Yali Hu Yi-Hua Zhou

The prevalence of occult Hepatitis B virus (HBV) infection in children was considerably varied from 0.1-64% in different reports. In this study we aimed to investigate the prevalence of occult HBV infection among the children born to mothers with positive hepatitis B surface antigen (HBsAg) in Jiangsu, China. Serum samples were collected from 210 children of 207 mothers with positive HBsAg. HBV...

Journal: :Intervirology 2010
E Veropalumbo A Marrone L Vallefuoco G Perruolo R Orlando F Scordino G Tosone R Zampino B Trani A Genovese G Spadaro C D'Orio G Portella

Hepatitis B surface antigen (HBsAg) is considered the best marker for the diagnosis of hepatitis B virus (HBV) infection. Mutations of the s gene involving amino acid substitutions within the a determinant could affect the sensitivity of diagnostic tests. In the present study, HBsAg mutants were detected in 3 immunocompromised patients, previously found to be HBsAg negative and anti-HBs positiv...

Mansour Bahardoust, Marjan Mokhtare, Shahram Agah,

Background: Hepatitis is among the major health problems, especially in developing countries. During past decades, the association between type of blood group (ABO) and hepatitis B and C virus has always been discussed. This study was designed to investigate the possible association between type of ABO blood group and chronic hepatitis B and C infection. Methods: In the present analytical stud...

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