Abstract
The incidence of the virus HIV is still high in vulnerable groups, such as drugs addicted, sex professionals, youngsters between the ages 17 and 20 years old and men who have sex with men (MSM). A measure taken worldwide and that could be useful to these groups is the Post-Exposure Prophylaxis (PEP) that lasts 28 days, being the adherence an essential factor to the treatment efficacy. Obj…