A Test and Treat Strategy in New HIV Diagnosis.

Inclusion Criteria: 1. Age ≥ 18 years old. 2. Having confirmed HIV-1 positive test. 3. Patients not previously treated with antiretroviral treatment (post-exposure prophylaxis will be allowed if not done in the previous 6 months). 4. Clinically stable patients, in the opinion of the investigator, at the time of inclusion. 5. Women of child-bearing potential\* must have a negative pregnancy test in urine before the inclusion in the study and agree to use highly effective contraceptive methods during the study. Highly effective contraceptive methods will include: hormonal contraceptive methods intrauterine device, bilateral tubal occlusion, vasectomized partner or sexual abstinence. 6. Written informed consent. Exclusion Criteria: 1. Pregnant or breastfeeding women at the time of the study inclusion or anticipating pregnancy during the follow-up period. 2. Suspicion of an active opportunistic infection that defers initiating antiretroviral treatment \> 7 days since HIV confirmation. 3. Known hypersensitivity or intolerance of any of the components of Biktarvy®. 4. Patients on treatment with any prohibited medication (see section 5.2: Concomitant, nonpermitted and permitted medication). 5. Any condition which, in the opinion of the principal investigator, may interfere with adequate understanding, cooperation or compliance with the study.