In an effort to determine how porcine epidemic diarrhea virus (PEDV) may have been introduced into the U.S. swine herd, AASV is conducting an epidemiologic survey of PED-positive herds.
This survey was compiled in collaboration with National Pork Board, National Pork Producers Council and USDA.
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Thursday May 30, 2013/ AASV/ United States.
http://www.aasv.org/