Chlamydia infection is a common sexually transmitted infection 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. Chlamydiaconjunctivitis or trachoma is a common cause of blindness worldwide. The World Health Organization (WHO) estimates that it accounted for 15% of blindness cases in 1995, but only 3.6% in 2002.
Chlamydia can be spread during vaginal, anal, or oral sex, and can be passed from an infected mother to her baby during childbirth. Between half and three-quarters of all women who have a chlamydial infection of the cervix have an inflamed cervix without symptoms and may not realize they are infected. In men, infection by C. trachomatis can lead to inflammation of the penile urethracausing a white discharge from the penis with or without a burning sensation during urination. Occasionally, the condition spreads to the upper genital tract in women (causing pelvic inflammatory disease) or to the epididymis in men (causing inflammation of the epididymis). C. trachomatis is naturally found living only inside human cells.
Chlamydia infection can be effectively cured with antibiotics. If left untreated, chlamydial infections can cause serious reproductive and other health problems with both short-term and long-term consequences. Research is ongoing in the prevention of this infection.
Chlamydia infection is one of the most common sexually transmitted infections worldwide. In 2013 about 141 million cases occurred. In the United States about 1 million individuals are infected with chlamydia. The word chlamydia is from the Greek, ??aµ?da meaning "cloak".
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http://medind.nic.in/iau/t05/i1/iaut05i1p37.pdf genital chlamydial infection in std patients: its relation to hiv infection by ag joyee, *sp thyagarajan, e v reddy, c venkatesan, m ganapathy indian journal of medical microbiology, (2005) 23 (1):37-40