22 Chlamydia

CDC Chlamydia page

5,587 cases

Fewer than 5 deaths

0.8 % of cases were hospitalized

453.2 cases per 100,000 population


22.1 Epidemiologic Review

22.1.1 Disease Information

Overview: Chlamydia is a bacterial infection caused by the bacterium Chlamydia trachomatis.

Symptoms: Almost 75% of infections are asymptomatic. Symptoms can include vaginal or urethral discharge, frequent urination, painful urination, lower abdominal pain, and lymphadenopathy (swollen lymph nodes). Frequent and/or prolonged infection can result in infertility.

Transmission: Transmission occurs during vaginal, oral, or rectal sex with an infected partner through contact with infected body fluids.

Treatment: Antibiotics are the recommended form of treatment.

Prevention Use of condoms, reducing the number of sexual partners, and increased routine screening can help prevent the spread of disease.

22.1.2 Demographics


Rates for <1, and 1-4 years of age are not displayed due to low case counts.


Race Rate per 100k
American Indian or Alaska Native, Non Hispanic 927.3
Asian, Non Hispanic 241.1
Black or African American, Non Hispanic 1247.9
Hispanic or Latino 780.6
Native Hawaiian or Other Pacific Islander, Non Hispanic 814.5
Other Race, Non Hispanic 1563.6
Two or More Races, Non Hispanic 29.7
Unknown Race and Ethnicity <5 cases
Unknown, Non Hispanic <5 cases
White, Non Hispanic 287.3


Rates for American Indian or Alaska Native, Black or African American, Hispanic or Latino, and Native Hawaiian or Other Pacific Islanders are elevated.


Rates for Unknown Race and Ethnicity, and Unknown, Non Hispanic are not displayed due to low case counts.


22.1.3 Outbreaks

No outbreaks were identified in 2023.

22.1.4 Monthly and Historical Comparisons




Chlamydia is the most commonly reported bacterial STD in the United States and in Salt Lake County.

Data for Utah and the CDC were retrieved from the CDC’s Notifiable Infectious Disease Data Tables.

22.2 Key Things to Know

  • Up to 75% of those with infection do not have any symptoms, and are likely to be untreated.
  • Chlamydia is spread solely through sexual contact with someone who is infected.
  • Persistent and/or untreated chlamydia infection may result in long term complications such as infertility and other reproductive health problems.