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The Truth about Chlamydia

Chlamydia is a sexually transmitted infection (STI) caused by the bacterium chlamydia trachomatis. In the UK, the number of new diagnoses has been steadily increasing each year since the mid-1990s and it has now become the most commonly diagnosed STI.

Sexually active women aged under-25, have a 1 in 14 chance of getting chlamydia, and men who are aged between 20 and 30 are most at risk of becoming infected.

As chlamydia sometimes has no symptoms, in both men and women, it can often go undiagnosed, unless it leads to complications. However, once the infection has been diagnosed, it is treatable.

If you haven't heard of chlamydia, you're in good company – a substantial proportion of the UK population hasn't either. Many people who are at risk of this infection don’t really know what it is, or understand it, even if they are aware of the name.

What is Chlamydia? How do you get Chlamydia?