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

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

Gender	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023	2024
	Number of Chlamydia Cases (Numbers by Age)
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
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
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
Female/Male Ratio	3.8	3.5	3.9	3.8	3.5	3.2	3.3	3.1	2.9	2.8	2.8	2.7	2.5	2.5	2.3	2.2	2.1	2.0	1.9	2.0	1.9	1.9	1.8	1.8
	Number of Gonorrhea Cases (Numbers by Age)
Total	17,121	14,770	13,965	17,376	17,684	16,591	17,327	17,905	15,539	13,919	13,070	12,770	10,553	9,666	10,615	12,866	15,413	16,922	18,264	23,414	22,166	16,373	15,277	13,625
Male	8,064	6,796	6,141	7,762	7,468	7,082	7,140	7,162	6,282	5,740	5,343	5,462	4,691	4,531	5,288	6,461	7,952	8,819	9,554	11,988	11,377	8,801	8,517	7,796
Female	9,057	7,974	7,823	9,614	10,161	9,471	10,130	10,597	9,088	8,157	7,706	7,290	5,859	5,128	5,315	6,402	7,444	8,099	8,706	11,425	10,787	7,572	6,760	5,829
Female/Male Ratio	1.1	1.2	1.3	1.2	1.4	1.3	1.4	1.5	1.4	1.4	1.4	1.3	1.2	1.1	1.0	1.0	0.9	0.9	0.9	1.0	0.9	0.9	0.8	0.7
	Number of Primary & Secondary Syphilis Cases (Numbers by Age)
Total	428	486	249	192	105	125	137	216	224	225	274	295	498	428	401	374	480	654	685	783	980	972	845	691
Male	267	294	156	131	85	97	107	156	185	205	247	267	468	398	368	342	446	584	589	671	773	766	665	531
Female	161	192	93	61	20	28	30	60	39	20	27	28	30	30	33	32	34	70	96	112	207	206	180	160
Female/Male Ratio	0.6	0.7	0.6	0.5	0.2	0.3	0.3	0.4	0.2	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.2	0.2	0.3	0.3	0.3	0.3
	Number of All Syphilis Cases (Numbers by Age)
Total	1,149	1,175	855	817	488	397	506	590	592	607	741	757	1,083	1,116	1,094	1,149	1,305	1,707	1,900	2,019	2,641	2,794	3,023	2,874
Male	632	643	464	468	314	240	330	372	431	464	576	622	906	901	889	980	1,110	1,445	1,525	1,593	1,967	2,045	2,150	1,983
Female	517	532	391	349	174	157	176	218	161	143	165	134	177	215	205	169	195	262	374	426	674	749	873	891
Female/Male Ratio	0.8	0.8	0.8	0.7	0.6	0.7	0.5	0.6	0.4	0.3	0.3	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.3	0.3	0.4	0.4	0.4

Notes:

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

Source: Michigan Disease Surveillance System, MDHHS.

Last Updated: 01/15/2026