STD Rates in Ontario County, New York
2023 CDC surveillance data for Ontario County, New York — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Ontario County recorded a combined STD rate of 316.4 per 100,000 residents in 2023, ranking 32nd of 62 counties in New York. Reported infections included chlamydia at 235.6 per 100,000 (265 cases, 58% below the state rate), gonorrhea at 68.4 per 100,000 (77 cases, 71% below the state rate), syphilis at 12.4 per 100,000 (14 cases, too few for a reliable comparison). Routine testing is the surest way to catch STDs early, since many produce no symptoms. Ontario County has confidential testing locations available.
STD Trends in Ontario County, 2000–2023
Reported cases per 100,000 residents each year, against the New York 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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Ontario County vs New York and the US
| Infection | Ontario County | New York | US | vs New York | vs US | Rank in New York |
|---|---|---|---|---|---|---|
| Chlamydia | 235.6265 cases | 558.4 | 490.7 | 57.8% below | 52% below | 35th of 62 |
| Gonorrhea | 68.477 cases | 235.6 | 178.2 | 71% below | 61.6% below | 32nd of 62 |
| Syphilis (P&S) | 12.414 cases | 14.8 | 15.8 | Too few cases | Too few cases | – |
Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among New York’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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