Women under 25 and older women with risk factors need testing every year.
Chlamydia is the most commonly reported bacterial STI in the United States.
Chlamydia is easily cured but can make it difficult to get pregnant if left untreated.
STI Prevalence, Incidence, and Cost Estimates in the United States: 1 in 5 people in the United States had an STI on any given day in 2018. These updated estimates provide the clearest picture to date of how common and costly STIs are in the United States. (January 25, 2021)
The State of STDs in the United States: This infographic highlights statistics for the three reportable STDs, as well as the populations most affected by these diseases, consequences of untreated STDs, and ways to prevent them. (April 13, 2019)
De-Duplication Guidance for Gonorrhea and Chlamydia Laboratory Reportspdf icon – 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