In early 2025, H5N1 avian influenza has spread beyond birds to infect U.S. dairy cows and dozens of humans including the first reported U.S. death raising serious concerns about its pandemic potential. With cases in all 50 states and signs of possible human-to-human transmission, experts stress that this is no longer solely an animal health issue. Read on to learn why urgent action is critical and what measures can help prevent a broader crisis.
