It's the fourth recorded in the state this year and a number not seen in Colorado since at least 2014. It comes as the number of measles cases in the U.S. is rising sharply. The new case is in an ...

More than 100 federal scientists who track bird flu, including vaccine and food safety experts, have been laid off. This ...

Scientists warn that bird flu infections in household pets could create new pathway for human transmission after cases spiked ...

Bird flu infections have been rare among people, but the pathogen is evolving, which has scientists worried about a possible pandemic.

"Infections among mammalian species in frequent contact with humans should be closely monitored," the researchers wrote ...

Experts warn about the possibility of a new pandemic in 2025 as the H5N1 bird flu virus spreads across all ... resulted in more than 70 human cases and one confirmed death in the U.S. and has ...