Study findings on chlamydia are outlined in reports from M.Y. Chen and colleagues.(Clinical report)

In this recent report, researchers in Melbourne, Australia conducted a study "To determine the risk factors associated with chlamydial infection in pregnancy and the sensitivity and specificity of these when used for selective screening. A prospective, cross-sectional study of pregnant women aged 16-25 years attending four major public antenatal services across Melbourne, Australia."

"Between October 2006 and July 2007, women were approached consecutively and asked to complete a questionnaire and to provide a first-pass urine specimen for Chlamydia trachomatis testing using PCR. Of 1180 eligible women, 1087 were approached and 1044 (88%) consented to participate. Among the 987 women for whom a questionnaire and a definitive diagnostic assay were available, the prevalence of chlamydia was 3.2% (95% Cl 1.8 to 5.9). In a multiple logistic regression model, more than one sexual partner in the past year (AOR 11.5; 95% Cl 7.1 to 18.5) was associated with chlamydia infection. The use of any antibiotic within 3 months (AOR 0.2; 95% Cl 0.1 to 0.6) was associated with a decreased risk of infection. Screening restricted to women who reported more than one sexual partner in the past year would have detected 44% of infections in women aged 16-25 years and would have required only 7% of women to be screened. The ...