title: [Prevalence of hepatitis virus infections in restaurant workers in Taipei (author's transl)].
abstract: Hepatitis B surface antigen (HBsAg) and anti-hepatitis A virus antibody (antiHAV) in sera or saliva of restaurant workers in Chung Shan District, Taipei, were tested by radioimmunoassay from October 1978 to March 1979. Among the 2006 serum samples 387 (19.3%) were HBsAg positive. While significant difference between male and female restaurant workers was observed, no age difference was noted. The workers originated from Taiwan demonstrated the highest frequency of hepatitis B antigenemia (20.9%). The next high group was the workers originated from southern mainland (16.5%). The lowest frequency was observed in those from northern mainland (9.4%). HBsAg was found in saliva of 40 out of 82 serum carriers (48.8%) Of the 946 workers 896 (94.7%) carried the anti-HAV antibody. There was no sex difference and the positive rates were 91.2%, 92.6%, 96.1%, 98.4% in 14--19, 20--24, 25--29 and > 30 years old population, respectively, i.e. a trend of increase in the rates with age was observed.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D005260:Female; D006514:Hepatitis B Surface Antigens / Q000032:analysis; D006525:Hepatitis, Viral, Human / Q000175:diagnosis / Q000453:epidemiology*; D006507:Hepatovirus / Q000276:immunology; D006801:Humans; D008297:Male; D008875:Middle Aged; D012147:Restaurants; D012499:Sanitation; D012698:Serologic Tests; D013624:Taiwan
chemical_list: D006514:Hepatitis B Surface Antigens