When it comes to the potential of H5N1 avian flu, otherwise known as bird flu, picking up mutations that may lead to human-to-human spread, that "train has already left the station," warns one infectious disease expert.

Bird flu has decimated poultry flocks and infected cattle herds. The risk to humans is currently low, but that could easily change as influenza can rapidly change.

While the virus hasn’t made a sustained leap into humans, vaccines and treatments are being developed ahead of an outbreak.

Dr. James Lederer, chief medical officer for Berkshire Health Systems, says we’re seeing the beginning, not the end, of an especially significant flu season.

UC San Francisco's Rais Vohra, MD, explains recent increase in reported virus infections and the risks of consuming raw cow’s milk.

Are people at risk for bird flu? How can I protect myself? Bird flu’s risk for the general public is still low, with no signs of p

Bird flu hits Nevada as its effects remain visible at grocery stores. Susanne Rust hated to say it, but she did: “I think the H5N1 bird flu outbreak is going to continue to pest

Over the past few weeks, grocery shoppers have seen the price of eggs continue to skyrocket. That's because of a shortage due to a type of viral infection called the Bird Flu. It's not only affecting consumers but also human health and one of Georgia’s biggest industries.