| origin, evolution, and genotyping of emergent porcine epidemic diarrhea virus strains in the united states. | coronaviruses are known to infect humans and other animals and cause respiratory and gastrointestinal diseases. here we report the emergence of porcine epidemic diarrhea virus (pedv) in the united states and determination of its origin, evolution, and genotypes based on temporal and geographical evidence. histological lesions in small intestine sections of affected pigs and the complete genomic sequences of three emergent strains of pedv isolated from outbreaks in minnesota and iowa were charact ... | 2013 | 24129257 |