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Intervirology. 2009;52(2):57-62. doi: 10.1159/000214633. Epub 2009 Apr 25.

Prevalence of occult hepatitis B virus infection in a general adult population in Korea.

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  • 1Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea.

Abstract

OBJECTIVES:

We investigated the prevalence of hepatitis B virus (HBV) markers and occult HBV infection in a general adult population in Korea.

METHODS:

HBsAg, anti-HBs and anti-HBc were analyzed on 1,091 samples of routine medical check-up examinees by chemiluminescence immunoassay. Nucleic acid amplification test (NAT) was performed on 1,047 HBsAg-negative samples by multiplex real-time polymerase chain reaction (PCR) kit for simultaneous detection of HBV, hepatitis C virus, and human immunodeficiency virus (Cobas Taqscreen MPX) in pools of six and reactive pools were resolved to individual samples, and further discriminated by PCR-based assay for HBV (Cobas Ampliscreen HBV).

RESULTS:

The prevalences of HBsAg, anti-HBc, and anti-HBs were 4.0, 39.3, and 75.4%, respectively. The prevalence of anti-HBc significantly decreased with decreasing age (p< 0.001). Occult HBV infection was found in 7 (0.7%) of 1,047 HBsAg-negative subjects, and 5 of them were anti-HBc-negative. Sequencing of HBV S gene in 3 cases revealed one wild-type and two mutant strains (W74S, F85Y; T63I, W74S, T131N substitutions).

CONCLUSIONS:

This study helps to understand the current status of hepatitis B infection and the prevalence of occult HBV infection in a general adult population in Korea.

Copyright (c) 2009 S. Karger AG, Basel.

PMID:
19401629
[PubMed - indexed for MEDLINE]
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