It was assumed to be contagious because epidemics of hepatitis often occurred in crowded, unsanitary conditions, but how it was passed from person to person was a mystery.

它被假定是传染性的，因为肝炎的传播经常出现在拥挤的、不卫生的情况下，它在人与人之间是怎样传递的是一个谜。

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The rate of new cases of hepatitis A, bacillary dysentery, typhoid fever and paratyphoid fever as intestinal contagious diseases in the two areas were compared.

收集两地传报的甲肝、细菌性痢疾、伤寒副伤寒新发病例进行肠道传染病的发病比较。

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If you have been suffering from an infectious or contagious disease or illness such as rubella or hepatitis you must not report for work without clearance from your own doctor.

| |如果雇员是患的一种传染性或传播性疾病，如风疹或肝炎等，在未得到医生的许可时，不得返回工作岗位。

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Hepatitis C is a contagious liver disease that can lead to liver failure and death, according to the Centers for Disease Control and Prevention.

CNN: Dozens of Okla. dentist's patients positive for hepatitis