“…In relation to the sociodemographic characteristics of the sample analyzed, it is noted that the mean age of individuals diagnosed with an STI was lower than in the case of those who did not have them. This result coincides with the publications in the scientific literature, considering the young population as one of the groups most exposed to STIs [ 22 , 23 , 24 ] along with other vulnerable groups such as gay men [ 5 , 25 , 26 , 27 , 28 ], men who have sex with men (MSM), transgender people, injecting drug users, women, sex workers, and immigrants, especially irregular immigrants [ 18 , 29 , 30 , 31 , 32 , 33 ]. Likewise, in a recent study on HIV and other STI epidemiology, it is observed that in 2006 the higher number of cases of some STIs such as syphilis, gonorrhea, chlamydia trachomatis, and lymphogranuloma venereum occurred in young adults between 25–44 years old [ 34 ], the age range in which the mean age of persons positively diagnosed with STIs is found in our study.…”