Data for the years 2021 & 2022 are preliminary. Due to the impact of the COVID-19 pandemic, data for the year 2020 should be interpreted with caution. Visit for the latest Coronavirus Disease (COVID-19) updates.
COVID-19 disruptions in HIV, diagnosis, care and reporting of deaths during 2020 have also made incidence, prevalence, and knowledge of status estimates derived from a CD4-based model, unreliable. Therefore, the HIV surveillance supplemental report Estimated HIV Incidence and Prevalence in the U.S., which provides data on estimated incidence, prevalence, and knowledge of status in the U.S., was not published by CDC this year.

Knowledge of Status | AHEAD


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.

Knowledge of Status

Knowledge (or awareness) of HIV-positive status occurs when a person with HIV is tested and diagnosed with HIV infection. Getting tested and knowing one’s HIV serostatus are entry points for an individual to receive either HIV prevention services (if HIV negative) or HIV medical care (if HIV positive), both of which are important to staying healthy and limiting the spread of HIV.

Formula for the Knowledge of Status indicator