Updated June 24, 2024
In January 2022, the state of South Carolina reported a case of highly pathogenic avian influenza in a wild bird—the first detected case of this virus subtype in the United States since 2016, likely introduced from Canada late in 2021. Since then, the virus has spread across the U.S., affecting both coasts with multiple separate introductions. As of 2024, this outbreak continues to cause significant issues, and has even reached dairy cows in Texas, Kansas, Michigan, New Mexico, South Dakota, Idaho, North Carolina, and Ohio.
