Drawing data from 64 sources, the National Health Security Preparedness Index is the most comprehensive look at each state's preparedness to date. It is also the first national index that looks at the nation’s health security by collectively measuring the preparedness of the states. The display of results on the NHSPI website takes into account both preparedness and model complexities; however, states face varying threats, apply preparedness principles in locally relevant ways, and have unique interdependencies. Explore the interactive map below to understand the range of influences on America’s health security and preparedness.