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1988年1～3月,我们对80户食毛蚶腹泻病人的家庭和70户非腹泻的对照家庭,进行甲肝发病的前瞻性调查,结果如下。一、腹泻病例的流行病学分析和病原学调查
From January to March 1988, we conducted a prospective survey on the incidence of hepatitis A in 80 households with diarrhea patients and 70 non-diarrheal control families. The results are as follows. First, the epidemiological analysis of diarrhea cases and etiological investigation