نتایج جستجو برای: occult infection
تعداد نتایج: 464882 فیلتر نتایج به سال:
BACKGROUND Hepatitis B surface antigen (HBsAg)-negative but hepatitis B virus (HBV) DNA-positive infection-known as occult hepatitis B infection (OBI)-occurs in 1% to >15% of HIV-positive individuals in the United States and South Africa, respectively. However, there are no data on OBI from Botswana, a country known to be hyperendemic for chronic HBV infection and to have a significant HIV burd...
Diagnosis of hepatitis B is routinely based on of serological assay of hepatitis B surface antigen (HBsAg). Occult hepatitis B virus (HBV) infection is generally defined as the detection of HBV -DNA in the serum or tissues of subjects who have negative test for HBsAg. Transmission of HBV infection has been documented from HBsAg negative, anti-HBc positive blood and organ donors. The aim of this...
BACKGROUND Occult hepatitis C virus (HCV) infection is a new entity described by the presence of HCV-RNA in liver biopsy and/or peripheral blood mononuclear cell (PBMC) specimens, and undetectable levels or absence of HCV-RNA and in the absence or presence of anti HCV antibodies in plasma by current laboratory methods. OBJECTIVES To evaluate the detection of HCV-RNA in PBMC specimens of the l...
Occult hepatitis C virus (HCV) infection has been found in anti-HCV and serum HCV RNA-negative patients with abnormal results of liver function tests of unknown origin and in patients with spontaneous or treatment-induced recovery from hepatitis C (2–6, 9–11). In a recent issue of the Journal of Clinical Microbiology, Halfon and coworkers questioned the existence of occult HCV infection as they...
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