Health authorities in the United States have issued renewed warnings about the H5N1 bird flu virus, emphasizing the importance of continued vigilance. Although new human cases have sharply declined since early 2024, experts remain concerned about the lack of recent testing and monitoring. The Centers for Disease Control and Prevention (CDC) confirmed the most recent infections in February 2025, with earlier reports linking most cases to workers on dairy and poultry farms. California, once considered a hotspot, recorded 38 confirmed cases but none after January 14. According to CDC data, only one person passed away from the virus, and most individuals experienced mild symptoms. Despite the apparent decrease in cases, experts believe the virus remains a threat, particularly to farmworkers who may hesitate to report symptoms due to immigration-related fears or reduced access to medical care.

While health officials suggest that seasonal migration patterns of wild birds may explain the current decline, others point to a deterioration in monitoring systems. Experts argue that mild infections could be going undetected, especially in vulnerable populations. Reports of resignations and staff reductions at the U.S. Department of Agriculture and the Food and Drug Administration have raised concerns about reduced diagnostic capabilities. Furthermore, ongoing studies by Texas A&M University and the University of Maryland aim to better understand human and animal exposure, particularly in dairy workers and domestic cats. According to recent findings, over 120 cats in the U.S. have been infected — some were fatally infected. Researchers stress the need for comprehensive surveillance and emphasize that complacency could undermine preparedness for a possible future outbreak.