(NEXSTAR) – The map of flu activity across the United States continues to darken, both figuratively and literally, as case ...

A dangerous bird flu, in other words ... seals and dolphins. Thus far, the United States is the only nation with H5N1 in cows; it's shown up in dairies in at least 17 states.

The current bird flu outbreak in the United States, featuring primarily the H5N1 strain, was first detected in wild bird flocks in January 2022, and in commercial poultry operations and backyard ...