TY - CPAPER AU - Maala, CUM, Yao, JC, Zhu, LD, Fang, SH, Yang, XJ TI - PRRS SEROPREVALENCE IN FORTY FIVE CHINESE PIG HERDS 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 - 2006 DA - 2006/06/01 L1 - https://www.aasv.org/library/swineinfo/Content/IPVS/2006/VIRAL/P_02-01.pdf SE - Major viral infections: PRRSV serology ER -