Experts Warn of Bird Flu's Potential to Mutate and Spread Among Humans

While human-to-human transmission of H5N1 has not occurred, its mutation in mammals and widespread presence in birds heighten concerns.

H5N1 bird flu has infected hundreds of wild birds and mammals across the U.S., with 67 human cases reported since 2024, mostly linked to animal exposure.
Experts caution that the virus is only a few mutations away from potentially spreading between humans, which could lead to a public health crisis.
The virus has devastated poultry and cattle populations, leading to significant economic impacts, including rising egg prices and livestock losses.
The U.S. has stockpiled 2-3 million doses of H5N1 vaccines, primarily for high-risk workers, but experts stress the need for more accessible testing and vaccine development for broader use.
Lessons from the COVID-19 pandemic have improved preparedness, but experts urge stronger leadership and coordination from the CDC to address the evolving threat.