Correlation among Genetic, Euclidean, Temporal and Herd Ownership Distances of PRRS Virus Strains in Quebec, Canada
In a study of farms in Quebec, the most common sources of transmission of porcine reproductive and respiratory syndrome (PRRS) virus were animals, semen, employees, technical services or vehicles, according to new research from Canada. The virus could travel by other means between farms up to a distance of five kilometres.