Many countries are stocking up on Tamiflu because of the risk of H5N1 avian flu.

许多国家因为H5N1禽流感的原因开始使用达菲。

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Finding this out might help us find a way of fighting the present H5N1 avian flu virus strain.

弄清这个问题将有助于我们寻找到一条途径去抗击目前的H5N1禽流感病毒株。

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Since January, the H5N1 avian flu virus has re-emerged and caused deaths across Asia and in Egypt.

今年一月以来，H5N1禽流感病毒重现，造成亚洲地区和埃及数人死亡。

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Jude Hospital in Memphis, Tennessee, used reverse genetics to produce a vaccine against the H5N1 avian flu virus.

CNN: Candidate virus for H1N1 vaccine arrives at CDC

The reported death toll gives the Middle East-based disease a case fatality rate of about 60%, similar to that of the feared H5N1 avian flu.

WSJ: Virus's Toll in Saudi Arabia Raises Fears of Faster Spread

His group will attempt to nail down exactly how many mutations - and which - are sufficient to make the H5N1 avian flu virus airborne, and whether these particular mutations can also make other bird flu viruses airborne.

CNN: Bird flu research resumes -- but not in U.S.