Home›Books›Swine influenza virus (H1 and H3) seroprevalence on U.S. swine operationsSwine influenza virus (H1 and H3) seroprevalence on U.S. swine operationsby United States. Animal and Plant Health Inspection Service. Veterinary Services. Centers for Epidemiology and Animal HealthNo description available.SwineVirus diseasesSwine influenza