Source: NATIONAL HOG FARMER, 4/20/22


Each year porcine reproductive and respiratory syndrome virus costs U.S. pork producers about $660 million in losses. Characterized by reproductive impairment or failure in breeding animals, and respiratory disease in pigs of any age, PRRS is the most economically significant disease to affect U.S. swine production since the eradication of classical swine fever. While the virus has been in the United States for at least 35 years, a new variant seems to pop up every five years or so, and researchers are still trying to determine all the ways the virus spreads.

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