STDs among females aged 10 and older (rate per 100,000), by age, 2003 (vertical bar chart): Total (10 years and older): chlamydia, 468.1; gonorrhea, 119.0. 10-14 years: chlamydia, 134.3; gonorrhea, 40.8. 15-19 years: chlamydia, 2,687.3; gonorrhea, 634.7. 20-24 years: chlamydia, 2,564.4; gonorrhea, 595.2. 25-29 years: chlamydia, 964.2; gonorrhea, 260.7. 30-34 years: chlamydia, 344.1; gonorrhea, 110.9. 35-39 years: chlamydia, 135.8; gonorrhea, 58.3.

Source: Centers for Disease Control and Prevention. Sexually transmitted disease surveillance, 2003. Atlanta, GA: September 2004.