STD Rates in Calhoun County, Michigan
2023 CDC surveillance data for Calhoun County, Michigan — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Calhoun County has one of the higher STD burdens in Michigan, with a combined rate of 854.8 per 100,000 residents in 2023 — ranking 4th of 83 counties. Reported infections included chlamydia at 630.6 per 100,000 (841 cases, 47% above the state rate), gonorrhea at 215.2 per 100,000 (287 cases, 41% above the state rate), syphilis at 9.0 per 100,000 (12 cases, too few for a reliable comparison). Many STDs show no symptoms, so testing is the only reliable way to know your status. Confidential options are available across Calhoun County.
STD Trends in Calhoun County, 2000–2023
Reported cases per 100,000 residents each year, against the Michigan rate (dashed). In a county this size a handful of cases moves the rate a long way, so read the shape rather than any single year.
Source: CDC NCHHSTP AtlasPlus county surveillance, 2000–2023.
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Calhoun County vs Michigan and the US
| Infection | Calhoun County | Michigan | US | vs Michigan | vs US | Rank in Michigan |
|---|---|---|---|---|---|---|
| Chlamydia | 630.6841 cases | 429.5 | 490.7 | 46.8% above | 28.5% above | 4th of 83 |
| Gonorrhea | 215.2287 cases | 152.2 | 178.2 | 41.4% above | 20.8% above | 7th of 83 |
| Syphilis (P&S) | 912 cases | 8.4 | 15.8 | Too few cases | Too few cases | – |
Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among Michigan’s counties. The US rate is all 50 states combined. Comparisons are left out where fewer than 20 cases were reported, because a rate built on so few cases can swing widely from one year to the next.
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