Valdes-Donoso, P., J. Alvarez, L.S. Jarvis, R.B. Morrison and A.M. Perez “Production Losses From an Endemic Animal Disease: Porcine Reproductive and Respiratory Syndrome (PRRS) in Selected Midwest US Sow Farms.” Frontiers in Veterinary Science, Vol. 5, (2018).

Results show that PRRS has a lingering negative effect on weaned pig production for an unexpectedly long period of time in sow farms. Considering only the decay of output, PRRS caused on average of about 7.4% yearly decrease in the value of production.