OBJECTIVE To study the impact of occult hepatitis B virus (HBV) infection in 115 consecutive anti-HIV-positive, hepatitis B surface antigen-negative patients, naive for antiretroviral treatment. METHODS Of these 115, 86 patients were followed for at least 6 months (range 6-36) with serial determinations of HIV RNA and HBV DNA by polymerase chain reaction and other laboratory tests. RESULTS ...

Background: SEN virus (SENV) is the latest virus proposed as a cause of unknown hepatitis cases. Among nine detected genotypes of the virus, genotypes D and H are more frequent in hepatitis cases of unknown origin. The aim of this study was to determine the frequency of SENV-D and SENV-H genotypes in the sera of healthy individuals and hepatitis B and C patients. Methods: Totally, 200 serum sam...

The global prevalence of hepatitis B virus is estimated to be 350 million chronic carriers, varying widely from low (<2%, as in Western Europe, North America, New Zealand, Australia, and Japan) to high (>8% as in Africa, Southeast Asia, and China). The overall prevalence in Brazil is about 8%. There are currently 7 genotypic variations, from A to G, and also 4 main surface antigen subtypes: adw...

Introduction: The hepatitis B virus (HBV) is one health problem in Iran. Occult hepatitis B (OBI) is diagnosed by the detection of HBV DNA in the serum or liver tissue of patients for whom other serology, especially HBsAg and HBcAg, are negative. The current study aimed to determine the prevalence of OBI in patients who refer for chemotherapy. Methods: Al...

Background and Aims: Evaluation of the prevalence of transfusion-transmissible infections (TTIs) in blood donors is a valuable index of donor selection and blood safety. This study was conducted to explore the prevalence and trends of TTIs markers and study of confidential unit exclusion )CUE) option among blood donors in Kurdistan province in the west of Iran. Materials and Methods: We conduc...

Studies on the prevalence of infection with hepatitis B virus (HBV) among children are scarce in Latin American countries, especially in Mexico. This study was aimed to investigate the prevalence of HBV infection, occult hepatitis B infection (OBI) and HBV genotypes among children with clinical hepatitis. In total, 215 children with clinical hepatitis were evaluated for HBV infection. HBV serol...

Background: Hepatitis B is the most common blood-borne viral infection that is considered as a major public health problem of the world's major health problems. The aim of this study was to investigate the prevalence of hepatitis B virus (HBV) infection among blood donors referring to blood transfusion centers. Methods: This retrospective cross-sectional study was performed on 216004 volunteer...

BACKGROUND Hepatitis B virus (HBV) infection is a major health problem worldwide. OBJECTIVES The aim of this study was to investigate the frequency of occult hepatitis B infection (OBI) and its associated risk factors, together with the molecular characterization of the virus in injecting drug users of Tehran. PATIENTS AND METHODS The study consisted of 229 injecting drug users. Serum sampl...

Objective: There are a number of medicinal plant products which has been used to treat various immunological diseases. Out of these medicinal plants, Calamus rotang has shown several medicinal properties including anti-viral, anti-diabetic, anti-inflammatory effects. Normally, the roots of C. rotang are used in various ailments to cure piles, burning sensation, cough, leprosy and bleeding disor...