National Pork Board
Julian Montoya Lopez, Juan Sanhueza, Carles Vilalta, Cesar Corzo, University of Minnesota | May 11, 2021
Porcine coronaviruses have been present in the U.S. swine industry for several years (Stevenson et al., 2013). Transmissible gastroenteritis virus (TGEV), porcine epidemic diarrhea virus (PEDV) and porcine Deltacoronavirus (PDCoV) continue to be part of the list of differential diagnosis when facing a clinical case of gastrointestinal disease (Marthaler et al., 2014; Turlewicz-Podbielska & Pomorska-Mól, 2021; Xia et al., 2018; Zimmerman., 2019). Unfortunately, both PEDV and PDCoV are responsible for breaks in breeding herds indicating that the virus continues to transmit within the pig population.
Even though the incidence of both viruses in the breeding herd population remains below 10% (MSHMP, 2021), it is not well understood what the situation is in the growing pig herd. Pig production companies continue to invest resources in order to eliminate these viruses from their downstream production flows to aid in the regional control (Drebes, 2020). However, there are still important knowledge gaps in relation to how these viruses continue to infect pig populations.