Sonya Stokes, an emergency room physician in the San Francisco Bay Area, braces herself for a daily deluge of patients sick with coughs, soreness, fevers, vomiting, and other flu-like symptoms.

The current human case count of H5N1 influenza in the US could be an underestimate, according to a new study from the Centers for Disease Control and Prevention (CDC). After testing 150 veterinarians,

A new Centers for Disease Control and Prevention study suggests that bird flu may be spreading under the radar in the U.S. In September, the CDC tested 150 veterinarians who primarily worked with cattle in the past three months.