Understanding the early dynamics of the 2014 porcine epidemic diarrhea virus (PEDV) outbreak in Ontario using the incidence decay and exponential adjustment (IDEA) model

Greer, Amy L.; Spence, Kelsey; Gardner, Emma

Available data include the date of laboratory confirmation, the county in which the confirmed positive farm was located and the type of swine production (e.g. finisher, nursery, farrow-to-finish, or farrow-to-wean) at the positive site. Due to the severity of the disease, rapid transmission within swine herds, and the critical nature of enhanced biosecurity, a liberal case definition is used whereby, a farm is defined as a confirmed case if the facility has had at least one animal sample confirmed as laboratory positive. The publically available data from OMAFRA do not include any suspected or probable cases and therefore, we do not expect the cumulative incidence to decrease between different time points due to suspect cases being ruled out through laboratory testing or other means.