Hepatitis B Virus DNA is Absent in Lebanese Blood Donors Who Are Positive for Both Anti-Hbc and Anti-Hbs Antibodies
Message:
Abstract:
Background
A major risk during blood transfusion is the transmission of infectious agents such as Hepatitis B virus (HBV). Screening for anti-HBc antibodies has long been used to test HBV infection and thus, blood safety. However, the development of advanced tools enabling HBV-DNA detection rendered the diagnostic benefit of anti-HBc test uncertain..
Objectives
In this study, we aimed to evaluate the relationship between HBV-DNA, anti-HBs, and anti-HBc loads..
Methods
Sera of 7200 blood donors were first screened for HBs antigen (HBsAg) and anti-HBc antibody. Samples that were found to be HBsAg-negative but anti-HBc-positive were further tested for anti-HBs and HBV-DNA..
Results
Of the 7200 tested samples, 7143 (99.2%) were HBsAg-negative, while the remaining 57 (0.8%) samples were HBsAg-positive. Among the HBsAg-negative samples, 490 (6.8%) were anti-HBc-positive. Of the anti-HBc positive samples, 397 (81%) were anti-HBs-positive, while the remaining 93 (19%) samples were anti-HBs-negative. Interestingly, all of the anti-HBc positive samples, which also were positive for anti-HBs, exhibited negative HBV-DNA results. On the other hand, the anti-HBc positive samples, which were negative for anti-HBs, showed both negative and positive HBV-DNA results..
Conclusions
Blood samples which are positive for both anti-HBc and anti-HBs are characterized by negative HBV load..
Language:
English
Published:
Hepatitis Monthly, Volume:17 Issue: 2, Feb 2017
Page:
7
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