Evidence of Recombinant Strains of Porcine Epidemic Diarrhea Virus, United States, 2013

Abstract

To investigate the evolutionary process by which porcine epidemic diarrhea virus (PEDV) in the United States hypothetically descended from strains in China, we analyzed PEDV-positive samples collected in China during January 2012–July 2013. Recombination in 2 strain sublineages was likely associated with identification of PEDV in the United States in 2013.

Keywords

• porcine epidemic diarrhea virus
• PEDV
• pigs
• recombination
• evolution
• viruses