TY - CPAPER AU - Derald Holtkamp, DVM, MS; Dale Polson, DVM, PhD; Chong Wang, PhD; et al. TI - Quantifying risk and evaluating the relationship between external biosecurity factors and PRRS-negative herd survival T2 - AASV Annual Meeting DP - American Association of Swine Veterinarians DB - AASV Swine Information Library UR - https://www.aasv.org/library/swineinfo/ PY - 2010 DA - 2010/03/02 L1 - https://www.aasv.org/library/swineinfo/Content/AASV/2010/109.pdf SE - Research Topics --- Sunday Concurrent Session #2 ER -