Bird flu spillover to other species poses global health threat, experts warn

FILE - A chicken is caged on a farm where thousands of birds are produced in Tepatitlan, Mexico, on June 6, 2024. World health experts cautioned on Dec. 17, 2024, that H5N1 avian influenza — bird flu — presents a possible global health threat.

International human and animal health experts warn the H5N1 avian influenza is evolving quickly and posing a global health threat as the virus is increasingly crossing species barriers and infecting a wide range of domestic and wild mammals.