PrEP: The Latest HIV Prevention Strategy
HIV drugs have long been used to prevent new infections in HIV-negative individuals.
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Post-exposure prophylaxis (PEP) is one strategy that involves the use of HIV drugs to prevent infection AFTER the person is exposed to the virus. In this case, the HIV medicines must be administered very soon after the exposure. Post-exposure prophylaxis was first developed to protect hospital and clinic workers from becoming infected after accidental needle-sticks with HIV-infected blood or from blood of a person whose HIV status was unknown.