A different strain of H5N9 has shown up in U.S. birds before.
This strain of avian influenza emerged in 2022 and brought major losses in the Northern San Joaquin Valley and beyond.
This strain of avian influenza emerged in 2022 and brought major losses in the Northern San Joaquin Valley and beyond.
AIV prevalence is monitored in hunter-killed waterfowl in the Sacramento Valley of California. Overall virus prevalence in waterfowl between 2014-2015 and 2021-2022 was 9.8%. Virus prevalence rates ...
WASHINGTON, D.C., USA — The first cases of highly pathogenic avian influenza, or bird flu, in 2026 have been detected, with infections spanning thousands of birds across multiple states. The United ...
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