TY - CPAPER AU - DCL Linhares, RB Morrison TI - Frequency of PRRSV detection by PCR in the last positive test before herd was considered stable 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/2014/44.pdf SE - Recent Research Reports ER -