In a nutshell

  • This is an infection that is caused by bacteria.
  • It is transmitted during sexual intercourse where the penis penetrates the mouth, the vagina or the anus.
  • Young people between 15 and 24 years of age represent the majority of declared cases of chlamydia in Quebec.
  • This is one of the most frequent STIs in the world, including in Quebec.

Symptoms and complications

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Most people infected with chlamydia do not show any symptoms.

If symptoms show up, they are as follows:

  • pain while urinating;
  • abnormal discharge from the vagina, the penis or the anus;
  • pains in the lower abdomen;
  • pain during sexual intercourse.

Possible consequences for health:

  • infertility;
  • pains in the lower abdomen;
  • problems becoming pregnant;
  • problems during pregnancy;

An infection caused by chlamydia increases the risk of contracting or transmitting HIV.

Screening and treatment

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  • When there are no symptoms, a urine test is enough. So, boys don’t have to worry about cotton buds being inserted.
  • When symptoms are present, a sample has to be taken from the uterine cervix or the urethra during the medical examination.


  • Chlamydia is treated by means of antibiotics.
  • For the entire length of the treatment sexual intercourse must be avoided. If, despite everything, you want to have sexual intercourse, you must use a condom.


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  • When you have sexual intercourse, use a condom.
    • A condom must be used before any contact of the penis with the mouth, the vagina or the anus.
    • A condom must be used from start to finish of the sexual intercourse.
  • If you are infected with chlamydia, it is important to let your partners know so that they can also have screening tests done and receive treatment.

In terms of figures :

40 000 Quebecers, in particular young people, will be given the diagnosis of an STBBI this year

Getting help

To get a screening test

  • Call Info-Santé 8-1-1
  • Talk it over with the nurse in your school or CLSC
  • Talk it over with your doctor


For any
other question

Consult Tel-jeunes

Tel-Jeunes Ministère de la Santé et des Services sociaux