Bird flu update: California declares emergency and U.S. sees 1st severe human case

A person in Louisiana has been hospitalized after being exposed to sick and dead birds. Meanwhile, California has declared an emergency over its growing outbreak in cattle.

Bird flu update: California declares emergency and U.S. sees 1st severe human case
This colorized electron microscope image released by the National Institute of Allergy and Infectious Diseases in March shows avian influenza A H5N1 virus particles (in yellow). The CDC says the first severe case of bird flu detected in a human during the current U.S. outbreak.

A person in Louisiana has been hospitalized after being exposed to sick and dead birds. Meanwhile, California has declared an emergency over its growing outbreak in cattle.

(Image credit: AP)