Chlamydia is the most common STI (Sexually Transmitted Infection) among young people aged 16 to 24. Most of the time without symptoms, this infection can cause vaginal discharge, lower abdominal pain, urinary pain and/or pharyngeal infections (angina, pharyngitis...). However, late discovery of the infection can have serious consequences, including salpingitis (inflammation of one or both fallopian tubes). If in doubt, consult your doctor.

For further information, we recommend that you consult :

- Santé Publique France's "Question Sexualité" website
- The Santé Publique France website, and its thematic dossier on all STDs / STIs
- The "Sexualités entre hommes et prévention" information site
- Regional COREVIH websites
- The French Ministry of Solidarity and Health website, and the article "Informer sur le VIH/Sida et les autres infections sexuellement transmissibles (IST)".
- The section dedicated to STDs / STIs on the Assurance Maladie "Ameli" website

And more specifically for AIDS, you can consult the Sida Info Service website.