Basic Summary for Chlamydia


Main name of condition: Chlamydia
Other names or spellings: Chlamydial Infection, Chlamydia trachomatis, Chlamydia vaginitis

What is Chlamydia?
  Brief description of Chlamydia: Common sexually transmitted disease often without symptoms.
  Parent types of Chlamydia: Sexually Transmitted Diseases, Male sexual conditions, Adolescent conditions, Under-diagnosed conditions, Diseases contagious from sex, Diseases contagious from oral sex, Diseases contagious from anal sex, Diseases contagious from vaginal sex, Vagina conditions
  Organs Affected by Chlamydia: genitals, vagina, penis
  Types of Chlamydia: Chlamydia pneumoniae, Chlamydia psittaci, Lymphogranuloma venereum
How many people get Chlamydia?
  Incidence (annual) of Chlamydia: estimated 4 million cases (NIAID/CDC) [4-8 million cases] including undiagnosed (about 600,000 diagnosed).
  Incidence Rate of Chlamydia: approx 1 in 68 or 1.47% or 4 million people in USA [about data]
  Undiagnosed prevalence of Chlamydia: estimated 3.4 million cases (based in NIAID/CDC estimates with only about 600,000 to 800,000 reported from 4 million cases)
  Undiagnosed prevalence rate of Chlamydia: approx 1 in 80 or 1.25% or 3.4 million people in USA [about data]
  Prevalance of Chlamydia: Though 526,653 cases were reported in 1997, an estimated 3 million cases occur annually.1 ... In 1997, 526,653 chlamydial infections were reported to the CDC, a case rate of 207 per 100,000 population.2
  Incidence of Chlamydia: This infection is now the most common of all bacterial STDs, with an estimated 4 to 8 million new cases occurring each year.3
How serious is Chlamydia?
  Complications of Chlamydia: see complications of Chlamydia
What causes Chlamydia?
  Risk factors for Chlamydia: see risk factors for Chlamydia
What are the symptoms of Chlamydia?
  Incubation period for Chlamydia: 1-3 weeks after exposure. Or 2 days to 2 weeks.
  Incubation period for Chlamydia: If symptoms do occur, they usually appear within 1 to 3 weeks of exposure.4
  Symptoms of Chlamydia: see symptoms of Chlamydia
Can anyone else get Chlamydia?
  Contagion of Chlamydia: Sexual contact (oral, vaginal, anal). Also spread to babies during childbirth.
  More information: see contagiousness of Chlamydia
How is it treated?
  Treatments for Chlamydia: see treatments for Chlamydia
  Prevention of Chlamydia: see prevention of Chlamydia
Society issues for Chlamydia
  Costs of Chlamydia: more than $2 billion
  Costs of Chlamydia: The annual cost of chlamydia and its consequences in the United States is more than $2 billion.1

1. excerpt from Chlamydia in the US: DSTD
2. excerpt from Sexually Transmitted Diseases Statistics, NIAID Fact Sheet: NIAID
3. excerpt from Sexually Transmitted Diseases, NIAID Fact Sheet: NIAID
4. excerpt from Chlamydia-Disease Information: DSTD

Last revision: October 23, 2003

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