Highly pathogenic avian influenza, commonly called bird flu, has increasingly spread to mammals and infected hundreds of people, raising concerns that it may lead to human-to-human transmission and ...

Does avian influenza affect wild birds? Find out if you need to take down bird feeders. Plus learn the risk to backyard ...

Pandemic researchers worry that avian flu could mutate into a widespread human illness, and Bourque noted human transmission is "always a concern because these viruses can infect mammals ...