The U.S. has reported its first death due to bird flu, aka H5N1. How deadly is H5N1? Experts discuss bird flu fatality rate amid ongoing outbreak.

The first human bird flu death was reported out of Louisiana on Monday, Jan. 6. The same case was the first serious case of H5N1 in humans in the U.S.

Bird flu, or avian influenza, primarily affects birds but there have been cases reported in humans as well. Unfortunately, a patient recently died from severe avian influenza A (H5N1), marking the first fatality from bird flu in the United States.