⚠ 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.

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, a 2020 edition of 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.

CD4 Depletion Model | AHEAD

Glossary

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

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CD4 Depletion Model

Model that enables the use of an estimate for a subject-specific expected time to cross a CD4 threshold and to estimate a subject-specific probability to have CD4 count above a pre-specified threshold at each time point.

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