Percent of persons age 14-39 years infected with C. trachomatis (chlamydia):
Total (age 14-39) 2.2%, males 2.0%, females 2.5% (NHANES 1999-2002)
Source: Datta SD, Sternberg M, Johnson RE, Berman S, Papp JR, McQuillan G, Weinstock H. Gonorrhea and Chlamydia in the United States among Persons 14 to 39 Years of Age, 1999-2002. Annals of Internal Medicine 147(2):89-96, 2007