Exploratory Study on the Role of the Digestive Microbiota in Adults Living With HIV-1

Inclusion Criteria: * Patient informed of the implementation of the study, its objectives, its constraints and the patient's rights. * Male and Caucasian patient. * Patient with HIV-1 infection determined by positive serology or plasma viral load (HIV RNA) measurement. * Patient on effective triple antiretroviral therapy, stable for more than 6 months, with a plasma viral load \<50 copies / ml for at least 6 months before inclusion (2 measurements). * Patient whose immune activation profile has been characterized beforehand (profiles 1, 2, 3, 4 and 5). * The patient must have given their free and informed consent and signed the consent form * The patient must be a member or beneficiary of a health insurance plan Exclusion Criteria: * Vulnerable person according to article L1121-6 of the CSP. * Adult person protected according to article L1121-8 of the CSP. * Patient presenting with a non-infectious pathology which may be the cause of an immune abnormality. * Patient having undergone treatment with an immunomodulator molecule or chemotherapy within 60 days before inclusion in the research or has an indication planned for the duration of the research. * Patient with a chronic digestive pathology or who had been operated on the previous year * The subject is participating in a category 1 interventional study, has participated in another interventional study in the last 3 months or is in a period of exclusion determined by a previous study * The subject refuses to sign the consent * It is impossible to give the subject informed information * The patient is under safeguard of justice or state guardianship