Learn more about the terminology used in the Ending the HIV Epidemic: A Plan for America initiative.

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Click on a term to view its definition.


This site contains data at the national-, state/territory-, and county/area- level. Data at the state/territory- or county/area- level may be suppressed to protect against a situation in which a person could potentially be identified (e.g., a small number of cases). Puerto Rico is the territory included at the state/territory-level. Washington, DC and San Juan, PR are the areas included with the county/area-level.