Vaccination, weaning can contribute to IAV spread on swine farms Hands of the farmworkers handling the infected 3-week-old piglets had a 91% contamination rate, while their clothes had a 97% contamination rate. By Staff, June 15, 2023 New research led by researchers at the University of Minnesota College of Veterinary Medicine reveals that farmworkers vaccinating read more National Hog Farmer site reports on “Vaccination, weaning can contribute to IAV spread on swine farms”