U.S. bird flu hospitalizations rise to 4 after Ohio discloses case

Summary

Ohio confirmed its first bird flu hospitalization, bringing the U.S. total to four. The patient, a farmer exposed to sick poultry, has been released.

Wyoming also reported a recent hospitalization, but details remain scarce.

Health officials are investigating which H5N1 strain caused these cases, as two variants—B3.13 and D1.1—continue spreading.

B3.13 is linked to dairy herd infections, while D1.1, which caused the first U.S. fatality, is increasingly infecting poultry.