Porcine reproductive and respiratory syndrome, or PRRS, is a thorn in the swine industry's side. Collectively, it costs the industry an estimated $664 million each year. Dr. Derald Holtkamp, associate professor of veterinary medicine at Iowa State University, said that equates to about 9.9 million pigs per year, which is far more devastating than porcine epidemic diarrhea virus (PEDv) has been, even at its worst.
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