When it comes to the potential of H5N1 avian flu, otherwise known as bird flu, picking up mutations that may lead to human-to-human spread, that "train has already left the station," warns one infectious disease expert.

A second subtype of H5 bird flu, known as D1.1, was detected in dairy cattle and infected one worker in the US state of Nevada. On February 10, 2025, the US Centers for Disease Control and Prevention released data showing the new D1.

Wyoming’s first case of H5N1 avian influenza in a human has been confirmed in a Platte County older adult, according to the Wyoming Department of Health (WDH).

A Wyoming woman has been hospitalized with the bird flu after her backyard chicken flock contracted the disease and died, state and federal health officials said. The Wyoming State Health Department said a Platte County woman tested positive for the H5N1 influenza on Friday,

Bird flu remains a serious concern globally, affecting both poultry and humans. While Wyoming has reported its first human case, India is battling multiple outbreaks in poultry farms. Read on to know if it is safe to still consume eggs and chicken.

An older woman in southeast Wyoming is hospitalized with bird flu, state health department officials said Friday.