Avian Flu California 2024. California’s race to understand avian flu outbreak in dairy cows. Cows at three dairy farms in california tested positive for h5n1 bird flu at the end of august, marking an expansion of the virus into the largest dairy producing region.

(adobe stock) never say diet. Cows in california have tested positive for highly pathogenic avian influenza (hpai) and are now in quarantine, according to the state’s department of food and.