Figure 12. Chlamydia—Trends in Positivity Rates Among Women Aged 15–24 Years Tested in Family Planning Clinics, by U.S. Department of Health and Human Services (HHS) Region, Infertility Prevention Project, 2006–2010
* 2009 percent positivity
for Region VI previously published in the 2009 Surveillance report has been corrected.
NOTE: See Definition of HHS Regions in the Appendix for definitions.