Figure J. Chlamydia — Trends in positivity among 15- to 19-year-old women tested in family planning clinics by HHS region, 2001–2005

Note: Trends adjusted for changes in laboratory test method and associated increases in test sensitivity. See Appendix (Chlamydia, Gonorrhea, and Syphilis Prevalence Monitoring)for more information. See Appendix for definitions of Health and Human Services (HHS) regions.
SOURCE: Regional Infertility Prevention Projects; Office of Population Affairs; Local and State STD Control Programs; Centers for Disease Control and Prevention