Co - infections of these diarrhea - associated viruses were common .
that PEDVs <*> were clustered with the variant strains of PEDV in genotype IIa .
Co - infections of these diarrhea - associated viruses were common .
Phylogenetic analysis revealed that PEDVs circulating in Southern China during the last 7 years were clustered with the variant strains of PEDV in genotype IIa .