Prevalence and clinical spectrum of chronic viral hepatitis in a middle-aged Swedish general urban population
Author
Summary, in English
BACKGROUND: Although abundant data are available regarding the prevalence of chronic hepatitis B or C virus (HBV, HCV) among both blood donors and patients with liver diseases, corresponding data for the general population are scarce. Accordingly, this study was designed to investigate the prevalence and clinical spectrum of HBV and HCV in a general Swedish middle-aged urban population. METHODS: Demographic data and blood samples were collected from subjects enrolled in a prospective study of cancer development in the city of Malmo (population 250,000). The participation rate in the preliminary examination was 46.2%. From 12,445 individuals born between 1926 and 1945 and included in the study, a statistically representative subsample of 6103 persons was selected. Blood samples were available from 5533 of these. The mean age of the subjects in the series was 58.5 +/- 5.9 years, and 59% were women. The HBV markers used were anti-HBc and HBsAg. HCV antibodies were detected with a third generation anti-HCV ELISA, followed by immunoblotting (RIBA 3) if the test was positive. Immunoblot-reactive samples were analysed for HCV-RNA by polymerase chain reaction and genotyped. In all patients with signs of chronic HBV or HCV, epidemiological data were evaluated and liver biopsies obtained. RESULTS: Of the series as a whole (n = 5533), 4.2% (n = 211) tested positive for anti-HBc and 0.2% (n = 10) for HBsAg. RIBA 3 analysis showed 0.37% (18/5533) to be anti-HCV-positive, of whom 83% (15/18) were HCV-RNA-positive. Apart from two (both from HBsAg carriers) with normal histology, all liver biopsies manifested various degrees of inflammation and fibrosis. Among anti-HCV-positives, median grade was 6 and median stage 1 (Knodell score). CONCLUSION: The prevalence of both chronic HBV and HCV is low in the Swedish general urban middle-aged population. Nonetheless, the long-term effects on the population and the health care system may be significant.
Department/s
- Chronic Inflammatory and Degenerative Diseases Research Unit
- Internal Medicine - Epidemiology
- Geriatric Medicine
- Department of Clinical Sciences, Malmö
- Clinical Microbiology, Malmö
Publishing year
2000
Language
English
Pages
861-865
Publication/Series
Scandinavian Journal of Gastroenterology
Volume
35
Issue
8
Document type
Journal article
Publisher
Taylor & Francis
Topic
- Gastroenterology and Hepatology
Keywords
- Chronic hepatitis
- general population
- hepatitis B virus
- hepatitis C virus
- prevalence
- Sweden
Status
Published
Research group
- Chronic Inflammatory and Degenerative Diseases Research Unit
- Internal Medicine - Epidemiology
- Geriatric Medicine
- Clinical Microbiology, Malmö
ISBN/ISSN/Other
- ISSN: 1502-7708