The Canadian Swine Health Intelligence Network is a swine health surveillance system that provides real time health information to producers and veterinarians. Surveillance involves tracking changes in health, updating disease knowledge, and communication of this information to improve decisions. Active (testing) and passive (reporting) detection methods are used by government or industry personnel to track listed and emerging diseases. In 2011 CSHIN ran an analysis to identify surveillance gaps, and the recommendation was to adopt a three-network system. The three networks are a swine veterinarian communication network, an anonymous data collection and analysis network, and a centralized laboratory data network. The benefits of the CSHIN networks are that they can detect outbreaks early on, provide a response infrastructure, provide information on the situation, improve communication, provide health information for trade contracts, can prove disease-free status, and can prevent disease-related trade blocks. The CSHin networks increase communication and knowledge of diseases in Canadian herds, allowing for faster, more accurate responses to disease outbreaks.