Data Methods

Learn more about the data that informs AHEAD.

Diagnoses indicator icon Diagnoses

Diagnoses of HIV infection refer to confirmed diagnoses during a given time period. Persons with diagnosed HIV infection may have been infected either recently or years before diagnosis. For the baseline value of the HIV diagnoses indicator, data on diagnosed HIV infection include persons aged ≥13 years with laboratory-confirmatory evidence of HIV infection during January 1, 2017 through December 31, 2017 and reported to CDC through December 31, 2019. Data are based on residence at time of diagnosis of HIV infection.

Preliminary 2019 diagnoses data represent the number of reported HIV infections among persons aged ≥13 years that were confirmed through laboratory or clinical evidence during a calendar year. Data presented by quarter include cumulative counts of HIV diagnoses through the specified quarter of the calendar year. Data presented by quarter are preliminary.

More information can be found at: HIV Surveillance Report 2018, Volume 31