Chlamydia infection epidemiology and demographics

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Maliha Shakil, M.D. [2] Aysha Anwar, M.B.B.S[3]

Overview

In 2014, the incidence of chylamydia was estimated to be 439 cases per 100,000 individuals in the United States.[1] The incidence of Chlamydia in women has increased greatly between 1987 and 2003 from 79 to 467 cases per 100,000 individuals.[2] Almost two-thirds of new chlamydia infections occur among youth aged 15-24 years. It is estimated that 1 in 20 sexually active young women aged 14-24 years has chlamydia.[1] Females are more commonly affected with chlamydia infection than males. The female to male ratio is approximately 1.52 to 1.[3] The prevalence of chlamydia among non-Hispanic African Americans is 6.7 times the prevalence among non-Hispanic Whites.[1]

Epidemiology

Incidence

  • Worldwide, the incidence of Chlamydia is estimated to be 131 million cases per year.[4]
  • In 2014, the incidence of chylamydia was estimated to be 439 cases per 100,000 individuals in the United States.[1] The incidence of Chlamydia in women has increased greatly between 1987 and 2003 from 79 to 467 cases per 100,000 individuals.[2]

Prevalence

  • In 2008, the prevalence of Chlamydia in adult population was estimated to be 9.1 million cases per year worldwide.
  • It is estimated that 1 in 20 sexually active young women aged 14-19 years has Chlamydia.[1]

Demographics

Age

  • Almost two-thirds of new Chlamydia infections occur among youth aged 15-24 years.
  • It is estimated that 1 in 20 sexually active young women aged 14-24 years has Chlamydia.[1]

Gender

  • Females are more commonly affected with chlamydia infection than males.
  • The female to male ratio is approximately 1.52 to 1.[3]

Race

  • The prevalence of Chlamydia among non-Hispanic African Americans is 6.7 times the prevalence among non-Hispanic Whites.[1]

References

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Chlamydia CDC Fact Sheet. CDC.http://www.cdc.gov/std/chlamydia/stdfact-chlamydia-detailed.htm#_ENREF_3. Accessed on December 29, 2015
  2. 2.0 2.1 Miller KE (2006). "Diagnosis and treatment of Chlamydia trachomatis infection". Am Fam Physician. 73 (8): 1411–6. PMID 16669564.
  3. 3.0 3.1 Chlamydia Infection. Wikipedia.https://en.wikipedia.org/wiki/Chlamydia_infection#cite_note-LancetEpi2012-26. Accessed on December 29, 2015
  4. WHO epidemiology http://www.who.int/mediacentre/factsheets/fs110/en/ (2016) Accessed on September 8, 2016

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