A line of Holstein dairy cows feed through a fence at a dairy farm in Idaho on March 11, 2009. As of April 11, 2024, a strain of the highly pathogenic avian influenza, or HPAI, that has killed millions of wild birds in recent years has been found in at least 24 dairy cow herds in eight U.S. states: Texas, Kansas, New Mexico, Ohio, Idaho, Michigan and North Carolina and South Dakota. (AP Photo/Charlie Litchfield, File)
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