virus (1) temps (durée) (1) association (1) infection (1) histoire (1) danger (1) adulte (1) taux (1) Drug use (1) Reporting (1) History (1) Acquisition (1) Methods (1) Cases (1) Hepatitis C virus (1) Immunodeficiency (1) Time (1) Swiss (1) Social groups (1) Sexual intercourse (1) Sex customs (1) Sex (1) Persons (1) Patients (1) Men (1) Human beings (1) Infection (1) Male homosexuality (1) History (1) Hepatitis (1)