Table 6B. Chlamydia — Reported Cases and Rates of Reported Cases Among Women Aged 15-24 Years by Age, United States, 2016-2020

Table 6B. Chlamydia — Reported Cases and Rates of Reported Cases Among Women Aged 15-24 Years by Age, United States, 2016-2020
Ages
Cases
Rates per 100,000 Population
2016 2017 2018 2019 2020 2016 2017 2018 2019 2020
15 19,704 20,247 19,518 20,352 17,168 958.9 1,004.4 961.7 994.8 839.2
16 39,066 40,681 40,001 40,135 33,901 1,874.5 1,968.3 1,976.3 1,973.0 1,666.5
17 61,406 65,496 66,329 65,210 55,136 2,988.7 3,120.8 3,194.3 3,212.5 2,716.2
18 93,174 98,907 101,783 102,336 87,113 4,521.3 4,774.1 4,824.0 4,911.9 4,181.2
19 103,289 111,959 114,004 116,097 101,306 4,980.6 5,387.4 5,474.9 5,487.5 4,788.4
20 100,524 107,397 110,939 111,609 99,860 4,812.4 5,140.2 5,315.2 5,349.0 4,785.9
21 96,723 100,160 102,127 103,394 93,215 4,532.8 4,759.7 4,865.7 4,944.2 4,457.4
22 84,813 86,678 86,274 86,633 78,669 3,892.5 4,030.4 4,078.8 4,118.6 3,740.0
23 73,054 75,046 73,729 73,497 66,368 3,304.7 3,416.6 3,409.6 3,467.0 3,130.7
24 63,274 64,769 64,663 63,434 56,037 2,777.9 2,906.1 2,928.1 2,927.2 2,585.9
Total 735,027 771,340 779,367 782,697 688,773 3,464.1 3,655.5 3,712.3 3,749.1 3,299.2
NOTE: Cases reported with unknown sex are not included in this table. The COVID-19 pandemic has introduced uncertainty and difficulty in interpreting 2020 case data. See Impact of COVID-19 on STDs for more information.

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