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Published on: October 31, 2010
Potential Contributions of Clinical and Community Testing in Identifying Persons with Undiagnosed HIV Infection in
James G Kahn1, Eran Bendavid2, Patricia M Dietz3
1Philip R. Lee Institute for Health Policy Studies, 8785University of California San Francisco (UCSF) and Consortium to Assess Prevention Economics (CAPE), Berkeley, CA, USA.
Background:
An estimated 166,155 individuals in the United States have undiagnosed HIV infection. We modeled the numbers of HIV-infected individuals who could be diagnosed in clinical and community settings by broadly implementing HIV screening guidelines.
Setting:
United States.
Methods:
We modeled testing for general population (once lifetime) and high-risk populations (annual): men who have sex with men, people who inject drugs, and high-risk heterosexuals. We used published data on HIV infections, HIV testing, engagement in clinical care, and risk status disclosure.
Results:
In clinical settings, about 76 million never-tested low-risk and 2.6 million high-risk individuals would be tested, yielding 36,000 and 55,000 HIV diagnoses, respectively. In community settings, 30 million low-risk and 4.4 million high-risk individuals would be tested, yielding 75,000 HIV diagnoses.
Conclusion:
HIV testing in clinical and community settings diagnoses similar numbers of individuals. Lifetime and risk-based testing are both needed to substantially reduce undiagnosed HIV.
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