The Lesotho Population-based HIV Impact Assessment (LePHIA 2020) was a household-based national survey among adults (defined as individuals aged 15 years and older) conducted between December 2019 and March 2020 to measure the impact of the national HIV response. LePHIA 2020 offered HIV counseling and testing with return of results to the participants and collected information about uptake of HIV care and treatment services.
LePHIA 2020 was the second survey to estimate national HIV incidence and the national and district-level prevalence of HIV and viral load suppression (VLS), defined as HIV RNA <1,000 copies per milliliter (mL). The first LePHIA was conducted between November 2016 and May 2017. The results of these two surveys provide critical information about national and district-level progress toward control of the HIV epidemic.