?:authorAffiliation
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[\'Pennsylvania Department of Agriculture, Pennsylvania Veterinary Laboratory, Harrisburg, Pennsylvania, USA.\', \'Silver Spring Clinic, Palmyra, Pennsylvania, USA.\', \'Diagnostic Virology Laboratory, National Veterinary Services Laboratories, Iowa, USA.\', \'Animal Diagnostic Laboratory, Pennsylvania State University, State College, Pennsylvania, USA.\', \'Pennsylvania Department of Health, Bureau of Epidemiology, Harrisburg, Pennsylvania, USA.\', \'Centers for Disease Control, Atlanta, Georgia, USA.\']
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