A nationwide seroepidemiology of hepatitis C virus infection in South Korea

hepatitis C virus Adult Male 570 prevalence Hepacivirus/genetics 610 Hepacivirus Hepatitis C/diagnosis* Viral/blood Antiviral Agents Hepatitis C/drug therapy Young Adult 03 medical and health sciences Age Distribution 0302 clinical medicine Hepatitis C Antibodies/blood* Residence Characteristics Seroepidemiologic Studies Hepatitis C/blood 616 Republic of Korea Prevalence Humans Sex Distribution Aged Antiviral Agents/therapeutic use 360 Korea Chi-Square Distribution Hepacivirus/immunology* Hepatitis C/epidemiology* Hepatitis C Antibodies Middle Aged Health Surveys Hepatitis C infection 3. Good health Treatment Outcome RNA RNA, Viral Female Republic of Korea/epidemiology Biomarkers/blood Biomarkers
DOI: 10.1111/liv.12108 Publication Date: 2013-01-04T15:20:55Z
ABSTRACT
AbstractBackground & AimsThe aim of this study was to reveal nationwide seroprevalence of HCV infection in South Korea by a large‐scale survey.MethodsFrom January to December 2009, a total of 291 314 adults underwent health check‐up in 29 centres nationwide. The data concerning anti‐HCV antibody and biochemical tests were obtained from all participants. Among subjects with positive anti‐HCV, such data as HCV RNA, genotypes and treatment detail were additionally analysed.ResultsUsing an estimated 2009 population of Korea, the age, sex and area‐adjusted anti‐HCV positive rate was 0.78%. Anti‐HCV prevalence in female patients (0.83%) was higher than that in male patients (0.75%). Gradual increase in anti‐HCV positivity was observed, from 0.34% in those aged 20–29 years to 2.31% in those >70 years. The age‐ and sex‐adjusted anti‐HCV prevalence varied in different areas, being higher in Busan and Jeonnam (1.53–2.07%), mid‐level in Seoul and surrounding districts (0.50–0.61%) and lower in Jeju (0.23%). The comparative analysis of laboratory variables between anti‐HCV (+) and anti‐HCV (−) group revealed significantly higher levels of alanine aminotransferase and lower levels of serum lipids in anti‐HCV (+) group. Among 1 718 anti‐HCV positive subjects, serum HCV RNA was measured only in 478 people, of whom 268 (56.1%) patients had detectable HCV RNA in serum. Among 50 patients for whom assessment of response to antiviral therapy was feasible, overall sustained virological response was achieved in 84% of patients.ConclusionThe prevalence of HCV infection is low in South Korea. Studies to analyse risk factors are warranted to reduce HCV infection.
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