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. 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 have no symptoms and do not know that they are infected. In men, infection of the urethra is usually symptomatic, causing a white discharge from the penis with or without pain on urinating. Occasionally, the condition spreads to the upper genital tract in women or to the epididymis in men. If untreated, chlamydial infections can cause serious reproductive and other health problems with both short-term and long-term consequences. Wikipedia [ - ]

Chlamydia infection is a common sexually transmitted infection in humans caused by the bacterium... [ + ]