New study confirms mammal-to-mammal avian flu spread

A new study provides evidence that a spillover of avian influenza from birds to dairy cattle across several U.S. states has now led to mammal-to-mammal transmission—between cows and from cows to cats and a raccoon.

Is bird flu in cattle here to stay?

Despite assurances from the federal government that bird flu will be eradicated from the nation's dairy cows, some experts worry the disease is here to stay.