The USDA strongly recommends testing before cattle herds are moved between states, which should give more testing information and should mitigate further state-to-state spread between herds.
Source: Successful Farming, April 15, 2024. Link.
HPAI doesn’t affect dairy cows the same way as it does poultry. With proper veterinary care, cows are recovering.” – Nora Wineland, DVM, MS, DACVPM