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Reports of Lyme Disease in St. Mary's County, Maryland

564

Confirmed cases of Lyme disease in St. Mary's County (2000 to 2020).

Ranked #15 of 24 counties in Maryland. That's 1.8% of Maryland's 31,487 confirmed cases.

Yearly Breakdown of Lyme Cases in St. Mary's County

Confirmed cases reported to the CDC each year.
View as a table
Confirmed Lyme disease cases in St. Mary's County by year
Year Confirmed cases
2000 9
2001 8
2002 10
2003 8
2004 19
2005 10
2006 19
2007 4
2008 21
2009 69
2010 30
2011 13
2012 13
2013 47
2014 44
2015 53
2016 54
2017 65
2018 30
2019 37
2020 1
2000–2020
Confirmed cases
    St. Mary's County

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    Lyme Stats for Other Maryland Counties

    Confirmed Lyme disease cases by county in Maryland, 2000 to 2020
    County Confirmed cases Share of state
    Montgomery County 3,670 11.7%
    Howard County 3,152 10.0%
    Baltimore County 2,906 9.2%
    Anne Arundel County 2,432 7.7%
    Harford County 2,295 7.3%
    Carroll County 2,289 7.3%
    Frederick County 2,138 6.8%
    Cecil County 1,458 4.6%
    Washington County 1,070 3.4%
    Calvert County 1,069 3.4%
    Prince George's County 1,024 3.3%
    Queen Anne's County 945 3.0%
    Charles County 675 2.1%
    Allegany County 615 2.0%
    St. Mary's County 564 1.8%
    Baltimore city 557 1.8%
    Talbot County 544 1.7%
    Kent County 465 1.5%
    Caroline County 382 1.2%
    Wicomico County 371 1.2%
    Worcester County 175 0.6%
    Dorchester County 163 0.5%
    Somerset County 152 0.5%
    Garrett County 92 0.3%
    Unknown County 2,284 7.3%

    "Unknown County" counts cases the CDC confirmed in Maryland 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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