This is an observational study, in which a single visit will be carried out, which includes a questionnaire on sexual habits and in which the possibility of carrying out a screening for Hepatitis C will be offered. Depending on the score obtained in the questionnaire, the screening will be carried out using a rapid serology test or viral load. During the first year, a SCORE will be developed to classify the risk of positive results. This SCORE will be used during phase 2 to offer users of the centres a targeted screening based on the Pre-test score.

Inclusion Criteria:

1. All BCN Checkpoint and BCN PreP·Point clients.
2. 18 years and older.
3. HIV uninfected or diagnosticated in the center in the last 7 days prior to the study inclusion.
4. Men that have sex with men or transgender women.
5. Signature of written consent form.
6. Ability to comply with the requirements of the study protocol.

Exclusion Criteria:

1. Knowledge of HIV infection from more than 7 days
2. Knowledge of active HCV infection

Male and TGW

Men who have sex with other men or transgender women, that are HIV negative and comes to get tested in our center or are under controls in our center. Estimated enrollment first Phase 6000-7000 participants. Second phase 2000-3000 participants.

Data requisition will be individually evaluated. After that IEC will be required to evaluate data sharing.

IPD will be availeble up to 5 years after Data publication

Data acces under private requisition and after individual evaluation.