The U.S. government failed to eliminate the virus on dairy farms when it was confined to a handful of states. Now at least 875 herds across 16 states have tested positive.
While many may believe the days of pandemics are behind us, a new bird flu epidemic could threaten that assumption, leading to more economic turbulence.
Doctors say the case of a teen left in critical condition shows H5N1 "can cause severe human illness." Mutations in the virus are deepening concerns about the spread of H5N1.
Results that may be inaccessible to you are currently showing.