It is a major global health problem and the most serious type of viral hepatitis.
它是一个重要的全球卫生问题，也是最严重类型的病毒性肝炎。
If a person has had one type of viral hepatitis in the past, it is still possible to get the other types.
如果一个人有一种类型的病毒性肝炎在过去，还是有可能获得其他类型。
If a person has had one type of viral hepatitis in the past, it is still possible to get the other types.
如果一个人有一种类型的病毒性肝炎在过去，还是有可能获得其他类型。
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