Despite encouraging recent scale-up of early infant diagnostic EID services, only half of HIV-exposed infants received an EID test before two months of age in 22 Global Plan priority countries during [ 9 ]. In older children, although there is potential for HIV diagnosis within child survival programmes, integration of provider-initiated testing and counselling remains limited [ 1011 ]. A large burden of undiagnosed perinatally acquired HIV-infection in adolescents has been identified in primary care clinics and other services [[…]