TY - CPAPER AU - Carmen Alonso, Peter Davies, Scott Dee TI - Epidemiologic evaluation of air filtration systems for PRRSV in large sow herds in a swine dense region in North America T2 - International Pig Veterinary Society Congress DP - American Association of Swine Veterinarians DB - AASV Swine Information Library UR - https://www.aasv.org/library/swineinfo/ PY - 2012 DA - 2012/06/01 L1 - https://www.aasv.org/library/swineinfo/Content/IPVS/2012/293.pdf SE - Emerging Diseases ER -