1. Sexually Transmitted Disease Surveillance 2013 Division of STD Prevention

2. Chlamydia — Rates of Reported Cases by Sex, United States, 1993–2013 NOTE: As of January 2000, all 50 states and the District of Columbia have regulations that require the reporting of chlamydia cases.

3. Chlamydia — Rates by Reported Cases by Region, United States, 2004–2013

4. Chlamydia — Rates of Reported Cases by State, United States and Outlying Areas, 2013 NOTE: The total rate of reported cases of chlamydia for the United States and outlying areas (Guam, Puerto Rico, and Virgin Islands) was 443.5 per 100,000 population.

5. Chlamydia — Rates of Reported Cases by County, United States, 2013

6. Chlamydia — Rates of Reported Cases by Age and Sex, United States, 2013

7. Chlamydia — Rates of Reported Cases by Race/Ethnicity, United States, 2009–2013 NOTE: Includes 39 states and the District of Columbia reporting race/ethnicity data in Office of Management and Budget compliant formats during 2009–2013.

8. Chlamydia — Reported Cases by Reporting Source and Sex, United States, 2004–2013

9. Chlamydia — Percentage of Reported Cases by Sex and Reporting Source, United States, 2013 *HMO=health maintenance organization; HD=health department NOTE: Other includes: Drug Treatment, Tuberculosis Clinic, Correctional Facility, Laboratory, Blood Bank, Labor and Delivery, Prenatal Care, National Job Training Program, School-based Clinic, Mental Health Provider, Other Hospital, Indian Health Service, Military, and HIV Counseling and Testing Site.

10. Chlamydia — Proportion of STD Clinic Patients* Testing Positive by Age, Sex and Sexual Behavior, STD Surveillance Network (SSuN), 2013 *Only includes patients tested for chlamydia † MSM=men who have sex with men; MSW=men who have sex with women only. NOTE: Six jurisdictions (Birmingham, Chicago, Denver, Hartford/New Haven, New Orleans, and Richmond) contributed data from January through June 2013 and the remaining jurisdictions (Baltimore, Los Angeles, New York City, Philadelphia, San Francisco and Seattle) contributed data for all of 2013.

11. Chlamydia — Prevalence Among Persons Aged 14–39 Years by Sex, Race/Ethnicity, or Age Group, National Health and Nutrition Examination Survey, 2005–2008 NOTE: Error bars indicate 95% confidence intervals.