The hepatitis B virus is 50 to 100 times more infectious than HIV.

乙型肝炎病毒的传染性比艾滋病毒强50至100倍。

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"There is a very small chance that some patients could have been exposed to the hepatitis B virus, the hepatitis C virus, or HIV, based on practices identified at the facility, " the congressional memo states.

CNN: STORY HIGHLIGHTS

Another 60 antivirals have begun clinical trials, aimed primarily at HIV, the virus that can lead to AIDS, and hepatitis B and C.

FORBES: The Golden Age of Antiviral Drugs