. Chlamydia trachomatis is the most common cause of sexually transmitted venereal infection in the world.
. Chlamydia trachomatis can cause serious complications in women: cervicitis, urethritis, endometritis, pelvic inflammatory disease (PID), and increased incidence of ectopic pregnancy and infertility.
. Vertical transmission to neonates during parturition can result in inclusion conjunctivitis or pneumonia. Pregnant woman should test for chlamydia trachomatis at her first prenatal visit.
. Chlamydia trachomatis can cause serious complications in men: urethritis and epididymitis.
. A positive result of Chlamydia trachomatis IgG indicates past, current, or chronic infection, while positive IgM antibodies suggest a recent infection.