Staff at an Ohio school were shocked to discover dozens of dead vultures on its campus. Even more shocking was the response from the state's wildlife officials.
The latest human case of H5N1 is the first in the state of Nevada.
The cat death appears to be the first case of H5N1 in the U.S. traced to raw pet food.
The big cat outbreak is the latest worrying instance of widespread bird flu transmission to mammals.
