Multiple Factors Contribute to Persistent Porcine Epidemic Diarrhea Infection in the Field: An Investigation on Porcine Epidemic Diarrhea Repeated Outbreaks in the Same Herd

Ruiqin Sun, Zhangming Leng, Chen Dekun and Changxu Song

Journal of Animal and Veterinary Advances 13 ( 6 ): 410 - 415 , 2014