All settings: Only specific groups of people in high HIV burden settings or individuals with HIV-related risks need post-test counselling messages encouraging retesting at the appropriate intervals. WHO guidance recommends annual retesting for: • all sexually active individuals in high HIV burden settings and; • people who have ongoing HIV-related risks in all settings. These include:

• key populations, defined as men who have sex with men, people in

prison or closed settings, people who inject drugs, sex workers and transgender people;

• country or epidemic specific risk groups such as men and

adolescent girls and young women in southern Africa

• people with a known HIV-positive partner.