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Voluntary testing and counseling (VTC) is a popular method for fighting the HIV/AIDS epidemic. The purpose of VTC is to reduce the incidence of the virus in a two-fold manner. First, testing provides access to health care and antiretroviral therapies that diminish the transmission rate of the virus. Second, counseling encourages safer behavior for not only individuals who test HIV-negative and wish to avoid HIV/AIDS infection but also altruistic individuals who test HIV-positive and wish to protect their partners from becoming infected by HIV. Surprisingly, DHS surveys that were conducted in sub-Saharan Africa provide empirical evidence that testing services are underutilized. Moreover, it is rare for both partners in a couple to be tested for HIV. This paper proposes a theoretical model that indicates how misperceptions about the HIV/AIDS virus may explain these puzzles. More specifically, this study demonstrates that individuals who are at risk of HIV infection may act strategically to avoid the cost of testing if they overestimate the risk of HIV transmission or believe that health care is not required if HIV is asymptomatic. The correction of false beliefs and the promotion of self-testing are expected to increase HIV testing rates.

Why are Testing Rates so Low in Sub-Saharan Africa? Misconceptions and Strategic Behaviors