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Korean Journal of Preventive Medicine 1997;30(3): 508-517.
Serum HBsAg and Anti-HBs Positive Rate among a City Health Center Visitors.
Mal Sook Shin, Tae Yoon Hwang, Chang Yoon Kim
Department of Preventive Medicine, and Public Health College of Medicine, Yeungnam University, Korea.
Hepatitis B virus(HBV) infection is one of the major health problems in Korea and HBsAg positive rate was known to be about 5~15% in general population. This study was conducted to identify the positive rates of serum HBsAg and anti-HBs among community population regared as having high HBV vaccination rate than in previous decade, using EIA(Enzyme immunoassay) method, in Seo-Gu, Taegu, Korea. The study subjects were 1,160 who visited Seo-Gu Health Center for check-up serologic markers of hepatitis B. The data were obtained from the serologic test for hepatitis markers and questionnaire survey was conducted to obtain the general characteristics, vaccination history, past history of hepatitis and other liver disease , and exposure history to risk factors of hepatitis of the study subjects. The positive rates of HBsAg and anti-HBs were 5.2% and 62.4% respectively. The positive rates of HBsAg for male and female were 6.6% and 4.3% respectively. The age was divided into two groups as group I(less than 15 years old), group II(more than 16years old) according to the hypothesis that these two groups might be different in HBV vaccination rate. HBV vaccination rates for group I and II were 83.1% and 52.3%. The positive rates of HBsAg for group I and II were 2.6% and 6.5%. The positive rates of HBsAg for the vaccinated people of the group I and II were 2.2% and 3.5%, the positive rates of anti-HBs for the vaccinated people of the group I and II were 70.1% and 71.1% respectively. The most significant factor in positive rate of HBsAg was 'hepatitis carrier in family'. Multiple logistic regression analysis revealed that 'hepatitis history' and 'hepatitis carrier in family' were significant variables for positivity of HBsAg, and 'hepatitis B vaccination' was only a significant variable for positivity of anti-HBs.
Key words: health center visitors; HBsAg and Anti-HBs; hepatitis B vaccination; risk factor
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