Centers for Disease Control and Prevention. (2016). Influenza Risk Assessment Tool (IRAT). U.S. Department of Health and Human Services.
This tool was developed by the Centers for Disease Control and Prevention and other influenza experts to assess the risk of a human pandemic emerging from influenza A viruses currently circulating in animals. The IRAT uses 10 weighted evaluation criteria to assess the risk of both emergence and public health impact and to classify each virus as low, moderate, or high risk.