Sexually transmitted infections are rising across Europe, but not at the same rate everywhere. The countries seeing the smallest increases share a few specific policy choices in common.
Sexually transmitted infections have been rising across most of Europe over the past decade, but the increase hasn't been uniform. Some countries have kept case numbers comparatively flat through sustained policy choices, while others have seen sharper increases — and the difference between the two groups tends to come down to a fairly specific, comparable set of factors rather than anything mysterious.
Why Rates Are Rising Faster in Some Countries
Inconsistent sex education. Approaches to sex education vary considerably across the continent. Some national curricula start early, are medically comprehensive, and cover consent and relationships alongside biology and prevention. Others focus narrowly on the mechanics of infection prevention, introduced later and with less consistency between regions or school types. Countries with earlier, broader curricula have generally reported more consistent condom use and testing behavior among young people than countries with narrower or later-introduced programs.
Declining condom use, particularly among younger adults. Several national surveys across Europe have tracked a gradual decline in consistent condom use over the past fifteen to twenty years, a trend not fully offset by increased awareness of other prevention tools. Persistent stigma around discussing sexual health openly appears to play a role in this decline, alongside a general public assumption — not entirely accurate — that other prevention measures have reduced the relevance of barrier methods.
Growing antibiotic resistance. Certain bacterial STIs, most notably gonorrhoea, have shown increasing resistance to standard antibiotic treatments in several European countries, a trend tracked closely by public health authorities. Resistant strains complicate treatment, extend the infectious period for affected individuals, and increase the risk of complications — a compounding factor on top of the transmission-related drivers above.
What the Lower-Rate Countries Have Done Differently
A handful of countries — Sweden, Germany, and Finland are frequently cited in comparative public health analysis — have maintained comparatively lower or slower-rising STI rates, and their approaches share recognizable common threads.
Sweden has integrated sexual health education into its national curriculum from a young age, with content that expands in depth and scope through adolescence. Public health researchers point to this early, sustained exposure as a contributing factor in Sweden's generally higher rates of consistent condom use and STI testing uptake among young adults compared to the European average.
Germany has run long-running, nationally recognized public health campaigns (including the well-known "Liebesleben" campaign) that combine broad reach with a deliberately non-judgmental tone, explicitly addressing sexual orientation and relationship diversity rather than a narrow, one-size-fits-all message. Public health messaging researchers have noted that campaigns framed this way tend to reduce stigma-driven avoidance of testing and open conversation more effectively than narrower, fear-based messaging.
Finland pairs its educational approach with practical accessibility — notably, free or low-cost STI testing available to young people without requiring a lengthy or stigmatizing process to access it. Removing friction from testing access is consistently associated, across multiple European studies, with earlier detection and treatment, which directly reduces the window during which an infection can be unknowingly transmitted further.
The Common Thread Across All Three
Looking across these three national approaches, the overlap isn't a single policy but a combination: education that starts early and stays comprehensive rather than narrowly clinical, public messaging that normalizes rather than stigmatizes the topic, and testing that's genuinely easy and low-friction to access. No single one of these three elements appears to be sufficient alone in the comparative data — countries with strong education but poor testing access, or vice versa, have generally not seen the same comparative benefit as countries doing both together.
What Public Health Researchers Point to as Next Steps
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Analysts studying this comparative data across European countries generally point to a similar set of recommendations for countries seeing continued increases: making comprehensive sex education a consistent national standard rather than a regional patchwork, investing in testing accessibility (including anonymous and low-cost options), continuing to modernize public messaging to reach younger audiences through the platforms they actually use, and sustaining investment in antibiotic resistance monitoring and treatment research given how directly that trend affects outcomes once an infection has already occurred.
