As Dr. Derald Holtkamp explains in this video, uncomplicated infections of single pathogens are often manageable with individual pig treatments. However, the more severe disease caused by co-infections frequently requires mass medication of groups in the water or feed, raising greater concerns about development of antimicrobial resistance.

The return on investment made in diagnostics, vaccinations, biosecurity and other management practices to break the problems with co-infections in growing pigs is typically very large.