Find out how mapping the spread of an avian influenza strain through birds across North America helped scientists understand its human-to-human spread risk.

A new effort to prepare for future avian influenza outbreaks is moving forward despite a major funding setback.

At this point, avian flu H5N1 is thought to have very limited ability to transmit between humans, but a recent case in British Columbia with an unknown source of transmission has piqued the curiosity ...