Risk factors for getting chlamydia include:
- Having unprotected sex (not using condoms).
- Having more than one sex partner.
- Having a high-risk partner or partners. This includes people who have more than one sex partner or sex partners who have chlamydia.
- Starting sexual activity before age 18.
Any child with chlamydia needs to be seen by a doctor to determine the cause and to assess for possible sexual abuse. For more information, see the topic Child Abuse and Neglect.