Chlamydia is a common sexually transmitted infection caused by a bacterium called Chlamydia trachomatis, and is usually transmitted through vaginal, oral, and anal sex. It is easily treated and cured with antibiotics.
Chlamydia infection is often asymptomatic, so regular testing is important. If not treated, chlamydia can cause serious problems, especially in women, including pelvic inflammatory disease, infertility, and ectopic pregnancy. In pregnant people, it can cause preterm birth.
In 2024, there were 101,742 diagnoses of chlamydia, around half of which were among people aged 20 to 29.
You can explore the latest chlamydia data from Australia in the interactive data dashboards below.
These dashboards are best viewed on desktop.