Post-exposure prophylaxis following non-occupational exposure to HIV: risks, uncertainties, and ethics.

Post-exposure prophylaxis (PEP) is the standard of care for occupational exposure to HIV infection although it has not been evaluated following non-occupational exposure. Although the most effective methods for preventing HIV infection remain those that prevent exposure to HIV in the first place, this article discusses the dilemmas surrounding post-exposure therapy following non-occupational exposure.