The use of a condom is essential to protect yourself and your partners against STDs. If you have any concerns, you should have an STD screening test. In the event of an infection, make sure you follow the correct treatment and inform your sexual partners.

What are the symptoms of Chlamydia?

Most Chlamydia infections do not cause any visible symptoms.

Asymptomatic Chlamydia infections are observed in 60 to 80% of infected women, compared to 30 to 50% of infected men.

The symptoms may appear a few days or a few months after contamination:

  • abnormal vaginal discharge
  • clear discharge from the vagina, penis or anus
  • redness of the mucous membrane
  • painful burning sensation when urinating.

Sciensano publishes two reports each year documenting the evolution of STDs in Belgium. The reports are based on data-collection networks.


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