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- W2020491486 abstract "Investigation of an epidemic of hepatitis A which occurred in Shanghai in early 1988 was conducted at the Shanghai No. 2 Yarn Dyeing and Weaving Mill. In this factory the attack rate between January and April 1988 was 9%. The rate was highest among staff who ate raw clams (18%) and higher among those who ate cooked clams (7%) than among those who did not eat clams (2%). In addition, independent risk factors for infection were: age below 30 years (relative risk (RR) = 3.0, 95% Cl: 2.0, 4.5) shift work (RR = 3.3, 95% Cl: 1.9, 5.8) and eating out (RR = 4.7, 95% Cl: 2.3, 9.7). Consumption of clams contaminated with hepatitis A was the main risk factor in this episode. The study indicates that strengthening surveillance of shellfish hygiene is important in preventing future epidemics of hepatitis A." @default.
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- W2020491486 date "1990-01-01" @default.
- W2020491486 modified "2023-09-26" @default.
- W2020491486 title "Risk Factor Analysis of an Epidemic of Hepatitis A in a Factory in Shanghai" @default.
- W2020491486 doi "https://doi.org/10.1093/ije/19.2.435" @default.
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