Summary

Two people in Wyoming and Ohio were hospitalized with H5N1 bird flu, with one still in care. Both had contact with infected poultry.

The cases heighten concerns about reassortment with seasonal flu, potentially creating a more dangerous strain. No human-to-human transmission has been detected.

The CDC is monitoring outbreaks as the Trump administration considers shifting containment strategies. Studies suggest prior H1N1 exposure may offer some immunity, but experts warn protection is uncertain.

The U.S. has reported 70 human H5N1 cases since detection in cows last year.