Clusters of biosecurity in Ontario sow herds and their geographical distribution

Implementing good biosecurity has direct benefits at the herd level since it is critical in reducing the likelihood of introduction and spread of emerging or endemic animal pathogens. In addition, biosecurity standards are increasingly having an impact at the industry level. Management practices related to biosecurity could be used to define a subpopulation and provide a basis for compartmentalization (1), to assist in the design of risk-based surveillance (2), or as an aid in regional disease