What is the purpose of post-exposure prophylaxis for HIV?

The purpose of post-exposure prophylaxis (PEP) for HIV is to prevent infection after potential exposure to the virus. PEP involves administering antiretroviral medications as soon as possible, ideally within 72 hours of exposure, to significantly reduce the likelihood of the virus establishing an infection in the body.

This intervention is critical following situations where there is a risk of exposure, such as needlestick injuries in healthcare settings or unprotected sexual encounters with someone who is HIV-positive. It is not a cure for HIV; instead, it is a preventive measure designed to block the virus from replicating and thereby prevent an infection from taking hold.

Other options do not align with the primary aim of PEP. The focus is solely on prevention after exposure rather than addressing existing infections, alleviating symptoms, or conducting diagnostic testing for HIV.