The first U.S. H5N9 outbreak has raised concerns as scientists warn of evolving bird flu risks—here's what you need to know about the symptoms.

Should people be concerned about bird flu? Here's what a new study says about mutations 03:33. A California duck farm made headlines this week after the World Organization of Animal Health ...

Vohra explains what we know about bird flu, both the H5N1 and H5N9 variants, and the precautions we can take to prevent it from becoming a public health emergency. What is bird flu? Bird flu ...

Here's what to know. Why bird flu is so rampant right now “We’ve never seen a global spread of avian influenza virus like this,” says Michael Osterholm, director of the Center for Infectious ...

H5N9 is a rare strain of avian influenza. H5N1 is the more common strain of the bird flu and has been responsible for most of the reported human cases. H5N1 was responsible for the first human ...

A new strain of bird flu has been detected on a duck farm in California. The World Organisation for Animal Health reported the outbreak of the new strain, H5N9, earlier this week.

A new strain of bird flu — H5N9 — has been detected in California’s Merced County at a commercial duck operation. According to the World Organization for Animal Health — an international ...

H5N9 is a rare subtype of the influenza A virus that can cause highly pathogenic avian influenza (HPAI), also known as bird flu. It's a reassortment strain that originated from the H5N1, H7N9, and ...

What Happens Next. While no human cases of H5N9 have been reported in the U.S., infections from bird flu strains are on the rise. According to the CDC, 145,077,200 poultry birds have been affected ...

As California’s Central Valley makes headlines for the growing number of people testing positive for the bird flu from exposure to dairy cows, Rais Vohra, MD, professor at UC San Francisco, Fresno and ...