There is another twist in the investigation of highly pathogenic avian influenza in dairy cows.
Samples tested by the FDA showing remnants or fragments of HPAI in pasteurized milk indicate the H5N1 virus has spread across more dairy herds than federal investigators have discovered.
In a statement Tuesday, the FDA explained samples of pasteurized milk had tested positive for the virus, though the agency said the findings "do not represent actual virus that may be a risk to consumers." FDA added, "To date, we have seen nothing that would change our assessment that the commercial milk supply is safe."