Avian influenza H5N1 infection in humans has spread to seven U.S. states, growing from 46 cases last week to 52 cases this week.

Bird flu H5N1 has infected dozens of people in the U.S. this year. Could it trigger the next pandemic? Experts explain the threat and symptoms to watch for.

Local doctors are seeing an increase in patients with upper respiratory infections. “We’ve had a big uptick in the number of patients coming in with upper respiratory ...

It’s been nearly eight months since avian flu was first detected in U.S. dairy herds, and cases in both cows and humans ...