Chlamydiae

Chlamydia

Chlamydia is a sexually transmitted infection caused by the bacterium Chlamydia trachomatis. The best ways to prevent transmission are to use condoms and get tested.

Our missions

  • Monitoring the epidemiological trends of Chlamydia

  • Describe the clinical, biological, and behavioral characteristics of affected individuals

  • Implement preventive measures tailored to the most at-risk populations

  • Informing the general public

  • Issue alerts in the event of an increase in the number of cases and/or clusters of cases diagnosed in the same location

question-sexualite.fr

The disease

Chlamydia trachomatis Infections

Sexually transmitted chlamydia infections are caused by Chlamydia trachomatis. Serovar L of this bacterium is responsible for lymphogranuloma venereum (LGV) or Nicolas-Favre disease.

As a significant public health concern, these infections are monitored by...

Learn more

What We Do

Chlamydial infections are caused by Chlamydia trachomatis. Serovar L of this bacterium is responsible for lymphogranuloma venereum (LGV), also known as Nicolas-Favre disease. Infections with Chlamydia trachomatis are among the sexually transmitted infections on the rise.

While these infections...

Learn more

Data

View data on the epidemiological situation regarding Chlamydia trachomatis infections in France on Santé publique France.

Screening activities: continued increase in the number of screenings

Reimbursed screenings in the private and public sectors (SNDS)

In 2024, 3.4 million people were screened at least once for Chlamydia trachomatis infection, representing a national screening rate of 50 per 1,000 inhabitants...

Learn more

Publications

Here you will find the latest scientific publications related to the studies and research conducted by Santé Publique France.

2 publications

In relation to

Gonococcie

Gonorrhea

thematic dossier

On the rise between 2022 and 2024, and more common among men (particularly those aged 26–49) and young people, gonorrhea is a sexually transmitted infection caused by the gonococcus bacterium....

Learn more
Syphilis

Syphilis

thematic dossier

Caused by the bacterium Treponema pallidum, syphilis is sexually transmitted. It can also be transmitted from mother to child during pregnancy. This disease can affect all organs and have serious...

Learn more

Sexual health

thematic dossier

Santé publique France focuses in particular on four areas of sexual health: sexually transmitted infections, including HIV; contraception; combating discrimination; and violence.

Learn more