Reports of Lyme Disease in Hillsborough County, New Hampshire
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4,957
Confirmed cases of Lyme disease in Hillsborough County (2000 to 2020).
Ranked #2 of 10 counties in New Hampshire. That's 24.3% of New Hampshire's 20,388 confirmed cases.
Yearly Breakdown of Lyme Cases in Hillsborough County
View as a table
| Year | Confirmed cases |
|---|---|
| 2000 | 14 |
| 2001 | 19 |
| 2002 | 36 |
| 2003 | 37 |
| 2004 | 38 |
| 2005 | 75 |
| 2006 | 151 |
| 2007 | 218 |
| 2008 | 449 |
| 2009 | 438 |
| 2010 | 423 |
| 2011 | 386 |
| 2012 | 425 |
| 2013 | 499 |
| 2014 | 136 |
| 2015 | 123 |
| 2016 | 215 |
| 2017 | 374 |
| 2018 | 395 |
| 2019 | 419 |
| 2020 | 87 |
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Lyme Stats for Other New Hampshire Counties
| County | Confirmed cases | Share of state |
|---|---|---|
| Rockingham County | 6,223 | 30.5% |
| Hillsborough County | 4,957 | 24.3% |
| Strafford County | 2,324 | 11.4% |
| Merrimack County | 1,828 | 9.0% |
| Grafton County | 668 | 3.3% |
| Carroll County | 607 | 3.0% |
| Cheshire County | 602 | 3.0% |
| Belknap County | 521 | 2.6% |
| Sullivan County | 354 | 1.7% |
| Coos County | 85 | 0.4% |
| Unknown County | 2,219 | 10.9% |
"Unknown County" counts cases the CDC confirmed in New Hampshire without a county of residence. They are included in the state total but not on the map.
Data Sources
All Lyme disease prevalence data sourced from the Centers for Disease Control and Prevention's surveillance data. Cases are counted by the patient's county of residence, which may not be where the tick bite occurred.
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