Further analysis established that they did have the same Russian virus strain, not commonly found in Australia.

进一步分析证明，她们有相同的俄罗斯病毒株，这种病毒株在澳大利亚很罕见。

youdao

Avian influenza virus type a has been identified as the cause, but the virus strain has not yet been determined.

禽流感A型病毒已被确认为病因，但是尚未确定病毒株。

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Last month’s HPAI outbreak in Thailand’s Pichit province was caused by the same virus strain circulating in the area since 2003/4.

上个月在泰国披集府爆发的高致病性禽流感是由从2003/4年在该地区开始流行的同样病株所引起。

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Mexico has the highest number of deaths and infections of the flu, which is caused by a new strain of the influenza A H1N1 virus.

VOA: standard.2009.05.08

To slow the spread of the virus and relieve the strain on the country's health system, the government has set up a national pandemic flu service, where people who suspect they're infected can get a diagnosis and prescription for antiviral drugs over the phone or Internet.

VOA: standard.2009.07.31

Donaldson said scientists are yet to definitively trace the origins of the virus strain that Britain is currently battling to contain and eradicate.

CNN: Foot-and-mouth virus: A global dilemma

While the new virus strain in the recent outbreak has affected humans, Canadian officials said it has shown up at a pig farm in Alberta, Canada.

CNN: Confirmed cases of H1N1 virus approach 900

On Saturday, the virus strain was found in a herd of swine in Alberta, Canada, and the animals may have caught the flu from a farmer who recently returned from a trip to Mexico.

CNN: Hysteria over swine flu is the real danger, some say