STI rates remain high in Australia's latest sexual health data

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Add as preferred source Credit: ROMAN ODINTSOV from Pexels New sexual health data released by the Kirby Institute at UNSW Sydney show a mixed picture for Australia, with rates of syphilis and gonorrhea remaining high after significant increases since 2016—and chlamydia stable but still the most commonly notified sexually transmitted infection (STI). First Nations peoples continue to experience higher rates of all STIs, highlighting the need for sustained investment in culturally safe sexual health services.

In 2025, there were 5,986 syphilis diagnoses, 42,393 gonorrhea diagnoses and 94,184 chlamydia diagnoses. Syphilis and gonorrhea diagnosis rates have both increased by more than 50% over the last decade, while chlamydia has fluctuated and slightly declined over the past year.