• Chlamydia is the most common STI in the Netherlands. In 2019, about 64,000 times chlamydia was diagnosed at the GP or center for sexual health.





Complaints that are associated with a chlamydia infection are a burning sensation when urinating and discharge from the penis or vagina. Many people have no complaints from a chlamydia infection. If women have a severe chlamydia infection for a long time, they can become infertile.


Chlamydia is caused by a bacteria. It is transmitted when the bacteria comes into contact with the mucous membranes of the penis, vagina, mouth or anus.

The danger in chlamydia lies in the fact that many people don't get any symptoms. This way, they can pass it on to others without them realizing it. Chlamydia can be treated well with antibiotics.

Risk group


Chlamydia mainly occurs in young adults. 20% of people with an infection are younger than 24 years old. The at risk group for a chlamydia infection are people who have sex without a condom with various bed partners, men who have sex with men, sex workers and visitors to sex workers. If your bed partner belongs to one of these groups, you also have a higher chance of getting a chlamydia infection.

HIV and chlamydia

HIV and chlamydia are transmitted in the same way. They are sexually transmitted diseases. In addition, a chlamydia infection makes the mucous membranes more sensitive, making it easier for HIV to enter the body. A chlamydia infection therefore increases the risk of contracting HIV.
HIV indicator conditions are conditions or symptoms that occur more often in people with an underlying HIV infection than in people without an HIV infection. Chlamydia is one of the HIV indicator conditions. If you have or have had Chlamydia and have not been tested for HIV, it is advisable to ask your doctor or general practitioner for an HIV test. Do you find it difficult to ask for an HIV test? You may download a call card that will help you formulate your question.