The United States has reported its first outbreak of H7N9 bird flu since 2017, affecting a commercial chicken flock in Mississippi. This development comes as health officials already grapple with the H5N1 strain that has infected dairy cows and one human in the U.S. Key Details The outbreak occurred on a Mississippi poultry farm with 47,654 commercial broiler breeder chickens, according to the World Animal Health Organisation. Officials have begun depopulating the affected flock to prevent further spread. “Highly pathogenic avian influenza (HPAI) H7N9 of North American wild bird lineage was detected in a commercial broiler breeder chicken flock in … Continue reading H7N9 Bird Flu Hits U.S.: 47,654 Chickens Culled in Mississippi; Human Fatality Rate Over 40%