Rates of gonorrhoea and infectious syphilis have surged by more than 50% across Australia over the past decade, according to newly collated data, with health experts warning that the trend is exposing deep and troubling inequities in the nation's sexual health landscape.

Data from the University of New South Wales' Kirby Institute shows 42,393 gonorrhoea notifications and 5,986 infectious syphilis notifications were recorded in 2025 alone. These figures represent 10-year increases of 57% and 56% respectively, a trajectory that experts describe as deeply concerning, particularly given who is being affected.

A Shift in Who Is Getting Infected

For decades, sexually transmitted infections in many high-income countries, including Australia, were most closely associated with specific risk groups. But the latest figures point to a worrying broadening of the epidemic, with notable rises among women, a population that has historically seen lower rates of these infections but faces more severe consequences when they go undiagnosed or untreated.

Untreated gonorrhoea and syphilis in women can lead to serious reproductive health complications, including pelvic inflammatory disease, infertility, and complications during pregnancy. Syphilis in particular poses a severe risk to newborns if passed from mother to child during pregnancy or birth, a condition known as congenital syphilis that can cause stillbirth, prematurity, and lifelong disability.

The rise among women suggests that public health messaging and testing infrastructure, often historically targeted at other populations, may be failing to reach or resonate with this group, leaving gaps in early detection and treatment.

Indigenous Australians Bear a Disproportionate Burden

Perhaps the most alarming element of the new data is the finding that Indigenous Australians are experiencing disproportionately high rates of infection compared with the general population. This pattern echoes long-standing health disparities faced by Aboriginal and Torres Strait Islander communities, many of which are rooted in unequal access to healthcare services, particularly in remote and regional areas.

Public health researchers have repeatedly identified structural barriers, including distance from clinics, shortages of culturally appropriate health services, and broader socioeconomic disadvantage, as key drivers behind elevated STI rates in Indigenous populations. Without targeted, community-led interventions, experts warn, these gaps are likely to widen rather than close.

The data underscores what many public health advocates have long argued: that generic, one-size-fits-all approaches to sexual health are inadequate for addressing the needs of Australia's most vulnerable communities.

A Global Pattern With Local Lessons

Australia's experience is not occurring in isolation. Globally, health authorities have documented resurgences in bacterial STIs over the past decade, often linked to changes in testing behavior, reduced condom use, and, in some regions, strained public health budgets. The World Health Organization has long emphasized that controlling sexually transmitted infections requires sustained investment in testing, education, and affordable treatment, lessons underscored by the broader history of infectious disease control.

The global fight against HIV/AIDS offers a stark historical parallel. Decades of research have shown that epidemics of sexually transmitted infections disproportionately harm the most marginalized populations when health systems fail to adapt. In southern Africa, for instance, the AIDS epidemic devastated communities partly because governments were slow to acknowledge the scale of the crisis and slower still to deliver appropriate care to at-risk groups. Uganda's success in curbing HIV transmission, by contrast, demonstrated the power of sustained, community-driven public health campaigns, including door-to-door education and accessible testing, tailored to local needs.

Australia's current rise in gonorrhoea and syphilis, while a different disease context, raises similar questions about whether current interventions are reaching the populations most at risk quickly enough.

Calls for a Renewed Policy Response

Health experts are urging a renewed and more targeted policy response, one that goes beyond broad public awareness campaigns to address the specific structural and access barriers facing women and Indigenous Australians. Proposed measures include expanding culturally safe testing services in remote communities, improving access to affordable and rapid testing options, and integrating sexual health screening more routinely into general practice and antenatal care.

Advocates also point to the need for sustained government funding, warning that gains in sexual health can quickly erode without continued investment. As the data shows, a decade of rising notifications suggests that current efforts have not kept pace with the scale of the problem.

With gonorrhoea and syphilis notifications now at levels significantly higher than a decade ago, health authorities face mounting pressure to act decisively, not only to curb transmission but to ensure that the burden of this public health challenge does not continue to fall unevenly on Australia's most vulnerable populations.