USDA’s Animal and Plant Health Inspection Service officials confirmed the first U.S. case of New World screwworm on June 3, found in a 3-week-old calf in southern Texas. As of June 9, six cases have been confirmed – five livestock in Texas, and one dog in New Mexico.

In the news related to dairy farming the second week of June 2026: More U.S. cases of New World screwworm were confirmed and Canada restricts imports, FARM Biosecurity celebrates updated Secure Milk Supply Plan and producer resources, and three Midwest farms earn 2025 High Production Herd Award.

APHIS's National Veterinary Services Laboratory has confirmed positive test results from seven dairy herds in Texas, two in Kansas, and one each in Michigan, New Mexico, Idaho and Ohio.

Federal agencies have confirmed that the “mystery illness” that had been affecting cattle on dairies in Texas, Kansas and New Mexico has been diagnosed as highly pathogenic avian influenza (HPAI).

Sudden loss of appetite; decreased milk production; thicker, concentrated, colostrumlike milk; a drop in rumen motility; abnormal tacky or loose feces; and fever are clinical signs reported thus far of an unidentified illness affecting dairy cows in the Southwest. Cases of this contagious illness were first reported several weeks ago in Texas.