In this cross-sectional, national and multicenter study, the main objective is to determine the prevalence of multi-drug resistant viruses (i.e., viruses that are resistant or possibly resistant to at least one antiretroviral drug from four different therapeutic classes: NRTI, NNRTI, PI, INSTI) among people with HIV 1 (PWH) experiencing virological failure.
Patient (male or female) 18 years of age or older.
Patient who has given his or her consent to participate in the study.
Patient on antiretroviral therapy for at least six months, with a plasma viral load (VL) greater than 50 copies/mL on at least two consecutive measurements.
Patients opposed to the use of their data.