If true, it could mean that the virus can rapidly evolve to make the jump from birds to humans. It’s a worrying development but it doesn’t mean that a new pandemic is imminent, says ...

2:00 Health Matters: Bird flu detected in U.S. pig Bird flu has spread far and wide, infecting a range of species like chickens, skunks, cows, foxes and polar bears and renewing questions about ...

Dr. Oliveira is the director of the Center for Epidemic Response and Innovation in South Africa. As a virus scientist in South Africa, I’ve been watching with dread as H5N1 bird flu spreads ...

With bird flu cases continuing to rise across the U.S., and a teenager now in critical condition in Canada after contracting the virus, alarm bells are sounding over how big the outbreak could become.