a total of 2987 field diarrheal samples <*> were tested .
Porcine epidemic diarrhea virus ( PEDV ) was most frequently detected virus with prevalence rates between 50.21 and 62.10 % in samples , and 96.43 % ( 162/168 ) in premises , respectively .
To investigate the prevalence and genetic evolution of diarrhea - associated viruses responsible for the outbreaks , a total of 2987 field diarrheal samples collected from 168 pig farms in five provinces in Southern China during 2012 - 2018 were tested .
Porcine epidemic diarrhea virus ( PEDV ) was most frequently detected virus with prevalence rates between 50.21 and 62.10 % in samples , and 96.43 % ( 162/168 ) in premises , respectively .