HIV/AIDS and STI unit provides evidence-based technical support to WHO Member States to help them scale up treatment, care and prevention services, as well as drugs and diagnostics supply, to ensure a comprehensive and sustainable response to HIV/AIDS. WHO is a co-sponsor of UNAIDS.
It promotes a public health approach to HIV prevention, treatment, care and support. This means working with countries and civil society to develop and implement simplified guidelines, decentralize services, and delegate tasks to less specialized health workers. In other words, good services for the greatest number of people.