There are two bird flu strains hitting duck and chicken farms in the United States. @CBSNews explains the differences between H5N9 and H5N1.
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#BirdFlu #Ducks #Chickens #Eggs #H5N9 #H5N1
How are H5N9 and H5N1 different? What to know after California bird flu outbreak
A different strain of H5N9 has shown up in U.S. birds before.Alexander Tin (CBS News)
