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Reports of Lyme Disease in Belknap County, New Hampshire

521

Confirmed cases of Lyme disease in Belknap County (2000 to 2020).

Ranked #8 of 10 counties in New Hampshire. That's 2.6% of New Hampshire's 20,388 confirmed cases.

Yearly Breakdown of Lyme Cases in Belknap County

Confirmed cases reported to the CDC each year.
View as a table
Confirmed Lyme disease cases in Belknap County by year
Year Confirmed cases
2000 5
2001 9
2002 6
2003 6
2004 11
2005 2
2006 10
2007 6
2008 22
2009 20
2010 34
2011 42
2012 29
2013 47
2014 25
2015 20
2016 36
2017 61
2018 41
2019 72
2020 17
2000–2020
Confirmed cases
    Belknap County

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    Lyme Stats for Other New Hampshire Counties

    Confirmed Lyme disease cases by county in New Hampshire, 2000 to 2020
    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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