Dairy Science Weekly


Welcome to ADSA's refreshed newsletter—Dairy Science Weekly—with a new name and look but the same great content as Dair-e-news. Be the first to know about the latest global dairy news, educational industry events, and the newest publications and resources from ADSA leadership and members. Subscribe to get Dairy Science Weekly directly to your inbox every Wednesday.

Opinion and editorial content included in Dairy Science Weekly represent the views of the authors. Publication does not represent endorsement of any position by the ADSA.

Jess Townsend
P: 217.356.3182 x 131

USDA, FDA, and CDC updates on HPAI detections

The US Department of Agriculture (USDA) has confirmed the presence of highly pathogenic avian influenza (HPAI) in Texas, New Mexico, Kansas, South Dakota, Michigan, Ohio, North Carolina, and now Idaho herds. The spread of symptoms indicates that HPAI transmission between cattle cannot be ruled out; the USDA and its partners have advised veterinarians and producers to practice good biosecurity, test animals before necessary movements, minimize animal movements, and isolate sick cattle from the herd. If milk from cows showing symptoms of illness is intended to be used to feed calves, the US Food and Drug Administration (FDA) strongly encourages that it be heat treated to kill harmful bacteria or viruses before feeding.

USDA's Animal and Plant Health Inspection Service (APHIS) has now created a landing page with recent announcements pertaining to HPAI detections in livestock, as well as biosecurity information and other resources, which will be updated daily.

The Centers for Disease Control and Prevention (CDC) also reported that a person in Texas has tested positive for the HPAI A(H5N1) virus. The human health risk assessment for the US general public is still considered low.

Avian influenza A viruses in ruminants are not entirely without precedent; a 2008 study experimentally infected bovine calves with HPAI, and a 2019 literature review explored the history of influenza A infections in bovine species.

There continues to be no concern about the safety of the commercial milk supply or that this circumstance poses a risk to consumer or public health. Pasteurized milk and properly cooked meat remain safe to consume.