“WHO has issued its first guidance to countries that are considering offering HIV medications, known as antiretrovirals (ARVs), to protect people who do not have the virus but who are at high risk of HIV infection,” an agency media note reports. “The guidance is based on clinical trials indicating that a daily dose of oral antiretroviral medication, known as pre-exposure prophylaxis (PrEP), taken by HIV-negative people to reduce the risk of infection, is both safe for people to use and effective in preventing HIV,” according to the media note (7/20).