TY - CPAPER AU - N. Garbes, C. Pollard and E. Johnson TI - PRRS case study: Is it the resident virus or is it a new introduction? T2 - Allen D. Leman Swine Conference DP - American Association of Swine Veterinarians DB - AASV Swine Information Library UR - https://www.aasv.org/library/swineinfo/ PY - 2014 DA - 2014/09/01 L1 - https://www.aasv.org/library/swineinfo/Content/LEMAN/2014/45.pdf SE - Recent Research Reports ER -