The aim  and background: Chlamydia trachomatis is the most common sexually transmitted infection, 4 million women get Chlamydia every year: 4 times as common as gonorrhoe, more than 30 times as common as syphilis and most common among women and men under 25. The only methods that offer protection against Chlamydia are the condom, IUD, do not protect against Chlamydia. Also, diaphragms and contraceptive gels may offer some protection against Chlamydia. In women using IUD contraceptive technology, due to potential effect of an IUD on acquiring a cervical or vaginal sexually transmitted infection, Chlamydia exposure does not mean IUD should be removed. Indeed, false positive tests can happen, furthermore IUD would not be removed unless in a presence of severe PID unresponsive to medications. Clinical studies and reviews of the literature have established that the risk of infection among IUD users is very low. Users of the pill do not have an significant risk of developing PID from Chlamydia. The aim of the study was to evaluate risk of Chlamydia upper-genital-tract infection among IUD users. Both epidemiological and bacteriological investigations indicates that the insertion process (not the device) poses the transient risk of infection.                                          Methods: The prevalence of contraceptive methods uses in association with Chlamydial pelvic inflammatory disease in 80 outpatient subject was studied. A method of direct immunofluorescence (DIF) was used for detection of genital Chlamydial infection.                                                                                                                                                   Results: Our results establish low risk of PID among IUD users. Our results suggests that oral contraceptive users had a prevalence of chlamydial infection 3/40 (7,5 %), IUD in place in 9/40 (22,5%) ( P < 0 .05). Inflammatory changes on Papanicolaou smears were associated with chlamydial infection (P < 0 .05). Other variables identified as risk factors for chlamydial infection included both a younger age at first intercourse and more years of sexual activity. Cervical ectopy was increased in women who used oral contraception (p < 0.05) and infection was increased in women with ectopy, regardless of their contraceptive method (p < 0.05).    Conclusions: Insertion process poses the transient risk of infection. IUD may be left in place even if you do test positive for chlamydia. Chlamydia exposure does not mean IUD should be removed. Pill users does not have an significant risk of developing PID from Chlamydia.