Researchers found no infectious virus in the sampled pasteurized milk products tested for H5N1.
In March 2024, dairy cows in Texas were found to be infected with highly pathogenic avian flu, or H5N1 bird flu , in the first known case of the virus spreading to cattle. Since then, H5N1 has been found in about 200 animals -- and 3 people -- across 12 states, according to the Centers for Disease Control and Prevention. The virus was soon detected in raw milk, leading researchers to investigate whether dairy products pose a risk to consumers.
Bird flu primarily infects and spreads among migratory birds and can be transmitted to domestic poultry, but the virus has been detected in other animals as well. Recently, those have included cats, dogs and juvenile goats, as well as a polar bear in Alaska and elephant and fur seals in the Antarctic. However, the discovery of H5N1 on dairy farms in March was a surprise -- the virus had never been found in dairy cattle before.
Spackman said the new findings"give us reassurance that what we have been doing -- pasteurization -- is keeping us safe from what we don't know about."
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