STD Rates in Essex County, Massachusetts
2023 CDC surveillance data for Essex County, Massachusetts — chlamydia, gonorrhea, and syphilis rates with state comparisons.
Essex County reported a combined STD rate of 538.4 per 100,000 residents in 2023, placing it 4th of 14 Massachusetts counties — in the upper half of the state. Reported infections included chlamydia at 419.0 per 100,000 (3,394 cases, 2% above the state rate), gonorrhea at 109.5 per 100,000 (887 cases, 22% below the state rate), syphilis at 9.9 per 100,000 (80 cases, 7% below the state rate). Many STDs show no symptoms, so testing is the only reliable way to know your status. Confidential options are available across Essex County.
STD Trends in Essex County, 2000–2023
Reported cases per 100,000 residents each year, against the Massachusetts 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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Essex County vs Massachusetts and the US
| Infection | Essex County | Massachusetts | US | vs Massachusetts | vs US | Rank in Massachusetts |
|---|---|---|---|---|---|---|
| Chlamydia | 4193,394 cases | 412.7 | 490.7 | 1.5% above | 14.6% below | 4th of 14 |
| Gonorrhea | 109.5887 cases | 139.8 | 178.2 | 21.7% below | 38.6% below | 6th of 14 |
| Syphilis (P&S) | 9.980 cases | 10.6 | 15.8 | 6.6% below | 37.3% below | 4th of 14 |
Rates per 100,000 residents, 2023. Ranks run from the highest rate (1st) among Massachusetts’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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