Most people who have chlamydia don't know it since the disease often has no symptoms.

Photo of a woman reading a fact sheet.

Women under 25 and older women with risk factors need testing every year.

Illustration of people abstracted behind a bar graph.

Chlamydia is the most commonly reported STD in the United States.

Photo of a clinician and her patient.

Chlamydia is easily cured but can make it difficult to get pregnant if left untreated.


The State of STDs in the United States: This *customizable* infographic highlights statistics for chlamydia, gonorrhea, and syphilis, as well as the populations most affected by these STDs, consequences when left untreated, and ways to prevent them. (September 25, 2018)

EPT Success StoryCdc-pdf

Innovative STD Prevention Campaigns Success StoryCdc-pdf

De-Duplication Guidance for Gonorrhea and Chlamydia Laboratory ReportsCdc-pdf – This document contains background and guidance on the timeframe that jurisdictions should use to de-duplicate their gonorrhea and chlamydia laboratory reports before reporting these cases to CDC. (June 17, 2016)

2015 STD Treatment Guidelines – Chlamydial Infections – Includes diagnosis, treatment, prevention, and special considerations for chlamydial infections. Includes updated screening recommendations. (June 4, 2015)

Prevalence of Chlamydia trachomatis Genital Infection Among Persons Aged 14–39 Years — United States, 2007–2012 – MMWR September 26, 2014

Recommendations for the Laboratory-Based Detection of Chlamydia trachomatis and Neisseria gonorrhoeae — 2014 (March 14, 2014)