“…We investigated subjects’ experiences with these preventive methods and practices at the interface with different social groups, such as heterosexual men 13 , 36 , 37 , 38 ; men who have sex with men (MSM) 25 , 30 , 39 , 40 , 41 , 42 , 43 ; women 26 , 33 , 44 , 45 , 46 ; African-Americans 21 ; women over 50 years 19 , 24 ; young people (cisgender, transgender, MSM) 16 , 27 , 34 , 35 , 40 , 47 , 48 ; and sex workers 23 , 29 , 45 . Still at the interface with preventive measures, some studies have analyzed issues related to vulnerability 15 , 22 , 49 ; explained risk behavior as the central object for analysis 14 , 31 , 35 , 39 , 42 , 47 , 50 , 51 , 52 ; masculinity 12 , 27 , 28 , 36 ; gender 22 , 50 and sexuality 16 , 43 , 53 , 54 ; and social support networks 41 .…”