animal diseases

Peggy Lowe / Harvest Public Media

Though there have not been any U.S. cases of the strain of avian flu that has killed more than 140 people in China this year, the U.S. Department of Agriculture’s head veterinarian says the agency is making preparations to combat the deadly virus in case it reaches North America.

The USDA’s Dr. Jack Shere stresses that it's impossible to predict how far a particular bird flu strain may travel or mutate. In the meantime, however, scientists are on alert.

An animal disease simulation exercise in central Kansas this week apparently prompted some Twitter users to question whether a real disease outbreak had been detected.