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National Data
- In 2006 1,030,911 chlamydial infections were reported to the CDC from 50 states and the District of Columbia
- From 1987 through 2006, the reported rate of chlamydial infection among women increased from 78.5 cases to 515.8 cases per 100,000 population.
These increases likely represent increased screening, increased use of nucleic acid amplification tests that are more sensitive than other types of screening tests, improved reporting, and the continuing high burden of disease.
- In 2006, the median state-specific chlamydia test positivity among 15- to 24-year-old women screened in family planning clinics was 6.7% (range: 2.8% to 16.9%).
- In 2006, after adjusting trends in chlamydia positivity to account for changes in laboratory test methods and associated increases in test sensitivity, chlamydia test positivity in women aged 15-24 years screening in family planning clinics decreased in three of the 10 HHS regions from 2005 to 2006, increased in five regions, and remained the same in two regions.
- In 2006, the median state-specific chlamydia test positivity among 15- to 24-year-old women screened in selected prenatal clinics in 25 states, Puerto Rico, and the Virgin Islands was 8.1% (range: 3.5% to 16.7%).
- Among women entering the National Job training Program in 2006, based on their place of residence before program entry, state-specific chlamydia prevalence ranged from 4.9% to 20.0% in 40 states, the District of Columbia, and Puerto Rico. The median state-specific chlamydia prevalence was 13.1%.
- Data on positivity of chlamydial infection among women entering juvenile or adult corrections facilities were reported to CDC from 34 states. Among women entering 57 juvenile facilities in 2006, the median facility-specific positivity for chlamydia was 14.2% (range: 2.8% to 29.4%). In women entering 40 adult corrections facilities, the median chlamydia positivity was 8.5% (range: 1.3% to 22.3%).
Data from the Centers for Disease Control and Prevention's "Sexually Transmitted Disease Surveillance 2006 Supplement, Chlamydia Prevalence Monitoring Project Annual Report", December 2007:
View the full "Sexually Transmitted Disease Surveillance 2006" report
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