TY - CPAPER AU - Daniel Linhares; Montserrat Torremorell; Robert Morrison TI - How long does it take for a breeding herd to produce PRRSv-negative piglets? 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 - 2012 DA - 2012/09/01 L1 - https://www.aasv.org/library/swineinfo/Content/LEMAN/2012/095.pdf SE - Section III: Disease Research ER -