Bird Flu Cases Surge Across U.S. Amid Reduced Monitoring Capabilities

Bird flu cases are rapidly increasing across the United States as wild bird migration patterns bring them into closer contact with domestic poultry, resulting in the confirmed infection of 67 flocks and the death of 3.72 million birds in the last 30 days.

The recent spike, a significant increase from the 60,000 affected birds reported in August, comes as federal monitoring efforts have been hampered by staffing cuts and policy changes. The U.S. Department of Health and Human Services deactivated its H5N1 emergency bird flu response on July 2, 2025, shifting oversight to the CDC’s Influenza Division and other agency programs. This reduction in dedicated resources raises concerns about the ability to quickly identify and contain potential outbreaks, impacting the nation’s food supply and agricultural economy.

Experts express concern over diminished information sharing between researchers and federal agencies. “We’re not in a great position for monitoring things,” said Tufts University virologist Wendy Puryear, noting that infrastructure for collaboration has been “either completely closed down or significantly hampered” since changes implemented under the previous administration. Additionally, concerns have been raised about underreporting of cases, particularly among immigrant workers who may fear repercussions for seeking testing or reporting exposure, as highlighted by University of Saskatchewan virologist Angela Rasmussen, who stated in May she couldn’t “argue with anyone who would be risking getting shipped to a Salvadoran gulag for reporting an exposure.” A recent report in JAMA Network Open identified at least 18 asymptomatic H5N1 infections worldwide as of August 25, 2025.

Despite the rising number of cases in birds, health officials maintain that the risk to the general public remains low, but advise caution for those working with poultry or wild birds. The National Foundation for Infectious Diseases Medical Director Robert Hopkins Jr., MD, recommends using personal protective equipment and practicing thorough handwashing after contact with potentially sick animals. For more information on avian influenza, visit the Centers for Disease Control and Prevention website.

Officials continue to track the virus and urge vigilance, emphasizing the importance of reporting sick or dead animals to authorities.