September 4, 2018
Although the incidence of Chlamydia trachomatis infections remains high among young women (ages 14-24), new data presented at the US Centers for Disease Control and Prevention (CDC) 2018 STD Conference indicate that prevalence of the sexually-transmitted infection (STI) is decreasing.
For the study, a team of investigators led by Kristen Kreisel, PhD, Epidemiologist Surveillance and Data Management Branch, Division of STD Prevention, CDC, examined estimated Chlamydia trachomatis prevalence data from the National Health and Nutrition Examination Survey (NHANES). Specifically, the team analyzed laboratory data collected from women between 14 and 39 years for 4, 2-year time periods (2001-2004, 2005-2008, 2009-2012, and 2013-2016). According to the study abstract, the investigators then estimated the weighted prevalence of Chlamydia trachomatis infections with 95% confidence intervals (CI), “overall and by sociodemographics, for each time period, and estimated the average percent change (APC) across time periods using JoinPoint software, fitting trend data to a log-linear model.”
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