STD Facts - Chlamydia

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** Sexually Transmitted Diseases (STDs) **


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*Chlamydia - CDC Fact Sheet*

*Basic Fact Sheet*Detailed Version

· What is it?
· How common is it?
· How do people get it?
· Who is at risk for it?
· Symptoms
· Complications
· Chlamydia and HIV
· Pregnancy
· Who should be tested?
· Diagnosis
· Treatment
· Partners
· Prevention

Untreated chlamydia can lead to infertility. Collage with reflective woman
and a couple.
This fact sheet now includes options for additional content.

-What is chlamydia?-

Chlamydia is a common sexually transmitted disease (STD) caused by a
bacterium. Chlamydia can infect both men and women and can cause serious,
permanent damage to a woman's reproductive organs.

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-How common is chlamydia?-

Chlamydia is the most frequently reported bacterial sexually transmitted
infection in the United States. In 2011, 1,412,791 cases of chlamydia were
reported to CDC from 50 states and the District of Columbia, but an
estimated 2.86 million infections occur annually. A large number of cases
are not reported because most people with chlamydia do not have symptoms
and do not seek testing. Chlamydia is


what is chlamydia

Chlamydia infection - Wikipedia, the free encyclopedia


** Chlamydia infection **

From Wikipedia, the free encyclopedia
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For chlamydia's life cycle, see Chlamydia (genus). For infectious agents
previous designated Chlamydiae, see Chlamydophila.
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/Classification and external resources/

Pap smear showing /C. trachomatis/ (H&E stain)
ICD-10 A55-A56.8, A70-A74.9
ICD-9 099.41, 483.1
DiseasesDB 2384
eMedicine med/340
MeSH D002690

*Chlamydia infection* (from the Greek, χλαμύδα meaning
"cloak") is a common sexually transmitted infection (STI) in humans caused
by the bacterium /Chlamydia trachomatis/. The term /Chlamydia infection/
can also refer to infection caused by any species belonging to the
bacterial family /Chlamydiaceae/. /C. trachomatis/ is found only in
humans.^[1] Chlamydia is a major infectious cause of human genital and eye
disease. Chlamydia infection is one of the most common sexually transmitted
infections worldwide; it is estimated that about 1 million individuals in
the United States are infected with chlamydia.^[2]

/C. trachomatis/ is naturally found living only inside human cells.
Chlamydia can be transmitted during vaginal, anal, or oral sex, and can be
passed from an infected mother to her baby during vaginal childbirth.
Between half and three-quarters of all women who have a chlamydia infection
of the cervix (cervicitis) have no symptoms and do not know that they are
infected. In men, infection of the urethra (urethritis) is usually
symptomatic, causing a white discharge from the penis with or without pain
on urinating (dysuria). Occasionally, the condition spreads to the upper
genital tract in women (causing pelvic inflammatory disease) or to the
epididymis in men (causing epididymitis). If untreated, chlamydial
infections can cause serious reproductive and other health problems with
both short-term and long-term consequences.

Chlamydia conjunctivitis or trachoma is a common cause of blindness
worldwide. The World Health Organization (WHO) estimates


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