Data Methods

Learn more about the data that informs AHEAD.

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Diagnoses indicator icon Diagnoses

Diagnoses of HIV infection refer to confirmed diagnoses during a given time period, regardless of when infection occurred. 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.

Data presented by quarter are preliminary and include cumulative counts of HIV diagnoses through the specified quarter of the calendar year.

Formula for the Diagnoses indicator

 

More information can be found at: HIV Surveillance Report 2019, Volume 32