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。

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It is the most common type of viral hepatitis.

这是最常见的病毒性肝炎。

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It is the most common type of viral hepatitis.

这是最常见的病毒性肝炎。

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