For the first time in the U.S., H5N1 avian influenza, commonly known as the bird flu, has been detected in a pig. The virus is widespread among wild birds globally. It continues to cause outbreaks in American poultry and dairy cows, and it has infected humans. Dr. Matthew Binnicker, director of the Clinical Virology Laboratory at Mayo Clinic, talks about avian flu and why the flu vaccine is important: https://mayocl.in/3YOGUAr | Mayo Clinic