“…Since only condoms protect against both sexually transmitted infections (STIs) and unwanted pregnancy, the goal of the WHO chlamydia prevention program is to increase condom use (2016). Several studies indicate that youths feel they have sufficient knowledge on STIs and unwanted pregnancy, yet do not use protection (Christianson, Johansson, Emmelin, & Westman, 2003;Darj & Bondestam, 2003;Häggstrom-Nordin, Hanson, & Tyden, 2002;Hammarlund, Lundgren, & Nyström, 2008;Higgins & Wang, 2015;Larsson, Eurenius, Westerling, & Tyden, 2006). An intervention study by Larsson, Eurenius, Westerling, and Tyden (2006) reveals that youths have high levels of knowledge on condoms and while knowledge did not increase following an intervention (education by a midwife and medical student), attitudes were improved and condom use increased [ibid.].…”