MANNING, Iowa (AP) — Veterinarians are working hard to monitor a virus that killed millions of baby pigs in the United States last year. The Sioux City Journal reports Iowa veterinarian Michelle Sprague is president of the American Association of Swine Veterinarians.

Sprague says keeping track of the porcine epidemic diarrhea virus means more paperwork for veterinarians and more testing. The number of cases of the virus is down this winter, but it is still early.

Sprague says the industry is better prepared to respond to the virus than it was when the disease first showed up.