The purpose of this document is to: Describe what HIV care and support is. Describe the purpose of care and support in the context of the 2016 World Health Organization (WHO) Consolidated guidelines on the use of antiretroviral drugs for treating and preventing HIV infection. Illustrate how care and support is essential, alongside HIV treatment, to reduce the numbers of HIV-related illnesses and deaths and increase the well-being of people living with HIV, including orphans and other vulnerable children, adolescents, key populations and people aged 50 years and over.