A dangerous bird flu, in other words, was suddenly circulating in mammals—mammals with which people have ongoing, extensive ...

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Scientists are sounding alarms about a genetic mutation that was recently identified in four dairy cow herds, nearly one year after H5N1 bird flu was first reported in Texas dairy cattle.

The virus already has caused devastating effects in the state, which has seen the second-highest number of outbreaks in ...

Dead birds are then ... In January, a new strain of bird flu called H5N9 was determined to be the source of infection of a commercial duck farm in California. While that new strain was not seen ...