Porcine epidemic diarrhea virus, a pathogen first detected in US domestic swine in 2013, has rapidly spilled over into feral swine populations. A better understanding of the factors associated with pathogen emergence is needed to better manage, and ultimately prevent, future spillover events from domestic to nondomestic animals.
Keywords: PEDV; United States; pathogen emergence; pigs; porcine epidemic virus; spillover; swine; swine coronavirus; viruses.