Ways to prevent chlamydia

Chlamydia is a sexually transmitted infection that can pass through vaginal, anal or oral sex, including when the infected person has no symptoms. Condoms and dental dams reduce contact with infected fluids and genital tissue, but must be used from the start of sexual contact. A previous infection does not provide lasting protection, so someone can be infected again after treatment.

Use a new condom for every act of vaginal or anal sex, and use a suitable barrier for oral sex. Do not share sex toys unless they are cleaned and covered with a new condom between users. If you or a partner may have been exposed, arrange STI screening and avoid sex until a clinician says it is safe to resume. Tell recent partners if you test positive so they can receive assessment and treatment. Take prescribed antibiotic treatment exactly as directed and do not share leftover tablets. Regular screening may be advised when you have a new partner, several partners, or other exposure risks.

Arrange prompt medical care after a possible exposure, a positive test, or symptoms such as painful urination, unusual vaginal discharge or bleeding between periods. Pelvic pain, fever, pain during sex or feeling very unwell needs urgent assessment because untreated infection can extend into the pelvis and cause pelvic inflammatory disease. Do not wait for symptoms before testing, because chlamydia can be silent.

Which STI screening tests do I need? When should I test after exposure? Should my partner or partners be treated, and when can we have sex again? Do I need a repeat test?