What is chlamydia?
STD Facts - Chlamydia
Skip directly to search Skip directly to A to Z list Skip directly to
navigation Skip directly to site content Skip directly to page options
CDC 24/7: Saving Lives. Protecting People.™CDC 24/7: Saving Lives.
Search The CDC
reason, some items on this page will be unavailable. For more information
about this message, please visit this page: About CDC.gov.
** Sexually Transmitted Diseases (STDs) **
· Add this to...
· Añadir en...
· Google Bookmarks
*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?
· Chlamydia and HIV
· Who should be tested?
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.
Back to Top
-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
Chlamydia infection - Wikipedia, the free encyclopedia
** Chlamydia infection **
From Wikipedia, the free encyclopedia
Jump to: navigation, search
For chlamydia's life cycle, see Chlamydia (genus). For infectious agents
previous designated Chlamydiae, see Chlamydophila.
/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
*Chlamydia infection* (from the Greek, ÏÎ»Î±Î¼ÏÎ´Î± 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.^ 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.^
/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
© 2005-2021 HaveYourSay.org