How are H5N9 and H5N1 different? What to know after California bird flu outbreak
The California duck farm's strain of H5N9 is different from those earlier cases because this time it is closely related to a newer variant of the H5N1 virus. That variant is called H5N1 D1.1, the USDA spokesperson said, which has emerged over the past year to dominate U.S. cases in wild birds and poultry.
A California duck farm has culled thousands of birds as the virus seems to be trading genetics with other viruses ...
U.S. officials disclosed the discovery of the virulent H5N9 strain at a California duck farm in a report in recent days to the World Organization for Animal Health, which maintains a database of ...
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