Objetive. To explore opinions and beliefs about risky sexual behavior and HIH transmission in tow hospital of Piura. Material y methods. Qualitative study based on extensive interviews and focus groups of people over 15 years old of age living with HIV. Interviews were recorded as audio, and then transcribed as text in MS Word. Information was analyzed with AtlasTi. Results. Results indicate that people living with HIV and receive antiretrovirals practice risky sexual behavior. Those results agree with quantitative-epidemiological studies establishing that TARGA era is associated with continuation or increase of risky sexual behavior. Two reasons could explain such behavior; first there is a belief that HIV is innocuous by effect of the antiretrovirals. Second, there is belief that a medical confirmation of undetectable viral count means being healed from infection. Conclusions. People living with HIV receiving antiretrovirals improving general health status maintain risky sexual behavior that may facilitate HIV transmission to their serodiscordant partners and increase the number of people infected. Until now, prevention activities mostly targeted people believed not to be infected, however, it is also necessary an intense secondary prevention effort that includes an explicit approach of sexuality in its entire dimension.