Table 10. Chlamydia - Reported Cases and Rates per 100,000 Population by Age Group and Sex, United States, 2005-2009

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Year	Age Group	Cases			Rates
Year	Age Group	Total	Male	Female	Total	Male	Female
2005	10-14	14,124	1,200	12,924	67.7	11.2	127.0
	15-19	336,036	53,734	282,302	1,597.2	498.0	2,754.5
	20-24	360,574	86,931	273,643	1,713.9	800.7	2,687.8
	25-29	148,059	44,712	103,347	737.9	435.4	1,054.8
	30-34	60,065	21,102	38,964	299.2	207.8	392.6
	35-39	28,509	11,700	16,809	135.7	110.8	161.0
	40-44	14,397	6,940	7,458	63.0	61.0	64.9
	45-54	10,105	5,203	4,902	23.8	24.9	22.7
	55-64	2,191	1,169	1,021	7.2	8.0	6.5
	65+	885	402	483	2.4	2.6	2.3
	TOTAL	976,445	233,553	742,892	329.4	160.0	493.9
2006	10-14	13,601	1,238	12,364	65.9	11.7	122.8
	15-19	352,212	58,820	293,392	1,651.7	537.9	2,824.0
	20-24	377,798	93,035	284,763	1,789.6	852.7	2,791.5
	25-29	161,178	49,369	111,809	778.3	466.4	1,104.3
	30-34	63,810	22,558	41,252	323.8	226.0	424.1
	35-39	30,947	12,763	18,184	146.1	119.8	172.6
	40-44	15,329	7,410	7,919	68.2	66.2	70.2
	45-54	11,351	5,818	5,533	26.2	27.3	25.2
	55-64	2,411	1,334	1,077	7.6	8.8	6.6
	65+	894	424	469	2.4	2.7	2.2
	TOTAL	1,030,911	253,236	777,675	344.3	171.7	512.0
2007	10-14	13,629	1,251	12,378	67.1	12.0	124.8
	15-19	379,416	67,247	312,169	1,766.9	611.0	2,982.5
	20-24	402,597	101,782	300,815	1,914.2	937.8	2,955.1
	25-29	174,826	54,889	119,938	830.2	509.4	1,166.5
	30-34	69,417	24,633	44,785	355.4	248.7	465.2
	35-39	33,654	13,838	19,816	158.9	129.9	188.3
	40-44	16,617	7,992	8,625	75.6	72.9	78.3
	45-54	13,141	6,881	6,261	30.0	31.9	28.1
	55-64	2,842	1,531	1,311	8.7	9.7	7.7
	65+	812	417	395	2.1	2.6	1.8
	TOTAL	1,108,374	280,931	827,443	367.5	189.0	540.9
2008	10-14	14,333	1,450	12,883	71.5	14.1	131.6
	15-19	420,101	77,226	342,875	1,952.7	700.3	3,269.5
	20-24	438,311	114,615	323,696	2,081.3	1,056.8	3,169.3
	25-29	188,535	60,985	127,550	883.7	557.4	1,227.3
	30-34	74,939	26,911	48,027	382.4	270.2	498.3
	35-39	36,637	15,004	21,633	174.5	142.0	207.5
	40-44	18,041	8,585	9,457	83.9	79.9	87.9
	45-54	14,311	7,437	6,874	32.3	34.0	30.5
	55-64	3,073	1,642	1,430	9.1	10.1	8.2
	65+	889	432	458	2.3	2.6	2.0
	TOTAL	1,210,523	314,752	895,771	398.1	209.9	581.2
2009	10-14	13,934	1,414	12,520	69.5	13.8	127.9
	15-19	430,255	81,110	349,145	1,999.9	735.5	3,329.3
	20-24	455,918	121,536	334,382	2,165.0	1,120.6	3,273.9
	25-29	190,970	62,721	128,249	895.2	573.3	1,234.0
	30-34	77,806	28,481	49,325	397.0	286.0	511.7
	35-39	36,380	14,930	21,450	173.3	141.3	205.8
	40-44	18,311	8,796	9,514	85.1	81.9	88.4
	45-54	15,072	7,856	7,216	34.0	36.0	32.0
	55-64	3,374	1,795	1,579	10.0	11.0	9.1
	65+	948	475	474	2.4	2.9	2.1
	TOTAL	1,244,180	329,490	914,690	409.2	219.8	593.4

NOTE: This table should be used only for age comparisons. If age was not specified, cases were prorated according to the distribution of cases for which age was known. Differences between total cases from this table and others in the report are due to different reporting formats. The 0- to 9-year age group is not shown because some of these cases may not be due to sexual transmission; however, they are included in the totals.

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Page last reviewed: November 22, 2010 (archived document)
Content source:
- Division of STD Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention