High-risk groups

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.

Behaviour that favours the transmission of Chlamydia

The transmission of STDs can generally be linked to certain types of behaviour:

  • having sexual intercourse without using a condom
  • having sexual intercourse with an infected partner.

Sexually active adolescents and young adults aged 15 to 34, in particular women, are the people most affected by Chlamydia.

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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