World health organization

10 facts on sexually transmitted infections

A teenage couple sit close together surrounded by their peers.

STIs disproportionately affect women and adolescent girls. Every year, one in 20 adolescent girls gets a bacterial infection through sexual contact, and the age at which infections are acquired is becoming younger and younger. Improving awareness and knowledge of STIs and how to prevent them among adolescents should be part of all sexual health education and services.

© WHO. All rights reserved.