Number of Chlamydia Cases by Sex and Age Michigan Residents, 2001-2024

Number of Chlamydia Cases
by Sex and Age
Michigan Residents, 2001-2024

Gender and Age	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023	2024
Total	31,090	32,272	32,590	41,247	38,729	38,142	41,291	46,555	48,264	50,430	50,063	48,727	45,091	44,843	47,702	47,414	50,998	51,256	50,374	44,833	46,265	43,036	42,957	38,792
Under 15 Years	505	476	453	562	690	749	755	908	748	823	764	677	576	450	427	417	431	414	411	328	328	343	410	393
15-19 Years	10,565	10,858	11,257	13,722	14,514	14,752	16,769	19,748	20,387	20,320	19,426	17,336	14,869	13,651	13,960	14,247	15,034	15,228	14,392	12,263	11,979	11,359	11,676	10,768
20-24 Years	11,840	12,227	12,013	15,488	13,511	12,882	13,696	15,167	16,202	18,068	18,877	19,238	18,421	18,457	19,005	18,398	19,477	19,052	18,624	16,911	17,398	15,531	14,897	12,807
25-29 Years	4,412	4,733	4,810	6,325	5,344	5,330	5,611	5,915	6,008	6,189	6,026	6,291	6,262	6,825	8,124	8,171	9,236	9,436	9,286	8,166	8,385	7,593	7,291	6,545
30-44 Years	3,032	3,338	3,354	4,324	3,989	3,775	3,788	4,277	4,255	4,379	4,324	4,429	4,218	4,645	5,232	5,291	5,801	6,047	6,532	6,185	7,071	7,016	7,410	6,956
45 Years & Older	338	361	420	491	421	496	527	520	608	572	587	664	612	744	880	847	979	1,058	1,119	976	1,103	1,194	1,273	1,322
Male	6,540	7,143	6,672	8,622	8,524	9,015	9,534	11,223	12,209	13,129	13,221	13,265	12,765	12,963	14,431	14,880	16,600	17,075	17,222	14,890	15,702	15,036	15,521	13,797
Under 15 Years	51	50	30	47	57	66	63	117	114	132	93	100	74	67	61	64	59	50	51	41	47	48	68	57
15-19 Years	1,356	1,433	1,436	1,738	2,077	2,419	2,789	3,555	3,924	4,090	3,937	3,611	3,123	2,880	2,961	3,253	3,467	3,599	3,478	2,941	2,903	2,946	3,293	3,101
20-24 Years	2,503	2,716	2,525	3,317	3,115	3,186	3,267	3,780	4,224	4,770	5,112	5,226	5,238	5,155	5,556	5,624	6,182	6,141	6,111	5,277	5,479	4,950	4,819	4,078
25-29 Years	1,232	1,399	1,273	1,707	1,601	1,619	1,693	1,878	1,995	2,070	2,024	2,134	2,196	2,473	3,046	3,042	3,589	3,741	3,698	3,194	3,263	3,014	2,967	2,526
30-44 Years	1,124	1,317	1,156	1,543	1,441	1,460	1,433	1,631	1,607	1,745	1,731	1,822	1,777	1,954	2,311	2,400	2,699	2,902	3,170	2,844	3,354	3,362	3,606	3,264
45 Years & Older	167	181	184	201	185	235	245	258	327	295	304	351	329	417	477	479	584	634	708	592	655	716	768	770
Female	24,550	25,129	25,918	32,625	30,080	29,012	31,582	35,133	35,868	37,178	36,732	35,363	32,283	31,816	33,224	32,513	34,342	34,154	33,130	29,942	30,560	27,999	27,436	24,995
Under 15 Years	454	426	423	515	630	678	685	769	614	680	662	575	500	382	366	353	371	364	359	287	281	295	342	336
15-19 Years	9,209	9,425	9,821	11,984	12,403	12,285	13,903	16,122	16,384	16,189	15,451	13,697	11,734	10,750	10,980	10,989	11,558	11,621	10,907	9,321	9,076	8,413	8,383	7,667
20-24 Years	9,337	9,511	9,488	12,171	10,347	9,663	10,391	11,333	11,928	13,256	13,729	13,974	13,178	13,277	13,434	12,767	13,274	12,903	12,505	11,634	11,917	10,581	10,078	8,729
25-29 Years	3,180	3,334	3,537	4,618	3,727	3,705	3,895	4,015	3,995	4,109	3,984	4,149	4,062	4,346	5,074	5,125	5,634	5,690	5,585	4,972	5,122	4,579	4,324	4,019
30-44 Years	1,908	2,021	2,198	2,781	2,537	2,303	2,341	2,622	2,634	2,618	2,585	2,592	2,437	2,685	2,918	2,888	3,092	3,140	3,359	3,341	3,716	3,654	3,804	3,692
45 Years & Older	171	180	236	290	234	260	280	257	276	275	282	313	282	326	401	367	395	424	411	384	448	477	505	552

Notes:

All Ages category includes records with unknown age.

Total (Both Sexes) category includes records with unknown sex.

Source: Michigan Disease Surveillance System, MDHHS.

Last Updated: 01/15/2026