A bacterial outbreak in Iowa hogs late last year may hint at a systemic issue with biosecurity, suggested Dr. Derald Holtkamp, professor of veterinary diagnostic and production animal medicine at Iowa State University (ISU).

Starting in November, a bacterium, called Actinobacillus pleuropneumoniae (APP) serotype 15, was discovered in 10 central Iowa pork production systems.

“From an epidemiological standpoint, this APP outbreak is interesting,” Holtkamp said May 9. “For about five months, it stayed contained in central...