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作者于1978年11月至79年4月对克什米尔流域所发生的一次病毒性肝炎流行进行了为期6个月的研究。本次流行的发病率为1.65%(275/16620),饮用河水者的发病率(2.83%)比不饮用河水者的(0.16%)明显增高(P<0.001),发病高峰集中在7周之内,经卫生学检查证实河水被粪便严重污染。潜伏期约10至40天(平均15天),大多数病例11至40岁,男:女为1.0:0.8,接触者中无黄疸型肝炎的发生率为27.3%(男32%,女23.4%)。病人的主要临床表现是:
The authors conducted a 6-month study of a viral hepatitis epidemic in the Kashmir Valley from November 1978 to April 1979. The incidence of this epidemic was 1.65% (275/16620). The incidence of drinking river water (2.83%) was significantly higher than that of non-drinking water river (0.16%) (P <0.001) Within the health examination confirmed that the river was seriously contaminated by manure. The incubation period was about 10 to 40 days (on average 15 days). The majority of cases were between 11 and 40 years of age and males and females were 1.0: 0.8. The incidence of jaundice-free hepatitis among contacts was 27.3% (32% for males and 23.4% for females) . The main clinical manifestations of patients are: