How are H5N9 and H5N1 different? What to know after California bird flu outbreak
What is H5N9 and how is it different from H5N1? Scientists classify bird flu viruses by which kind of two key proteins are ...
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H5N1 avian flu strikes more poultry in 4 states
The US Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS) today confirmed more H5N1 avian ...