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  2. U.S. Lyme Data
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Reports of Lyme Disease in the U.S.

538,775

Total cases of Lyme disease confirmed nationwide (2000 to 2018).

Note:

Due to the fact that the CDC's data only represents confirmed cases, the actual quantity of Lyme disease cases may be far greater. We estimate a total of 5,387,750 true cases of lyme of disease in U.S. since the year 2000.

Most Infected Counties

County Total Cases
Dutchess County, New York 11,519
Chester County, Pennsylvania 11,436
Fairfield County, Connecticut 9,739
Connecticut (Unknown County) 9,054
Bucks County, Pennsylvania 8,801
Morris County, New Jersey 8,508
Montgomery County, Pennsylvania 8,237
Middlesex County, Massachusetts 8,168
Columbia County, New York 7,017
New London County, Connecticut 6,515
Hunterdon County, New Jersey 6,345
Orange County, New York 6,302
New Haven County, Connecticut 6,119
Monmouth County, New Jersey 6,115
Suffolk County, New York 5,981
Plymouth County, Massachusetts 5,965
York County, Pennsylvania 5,788
New Castle County, Delaware 5,535
Rockingham County, New Hampshire 5,443
Sussex County, New Jersey 5,426
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Data Sources

All Lyme disease prevalence data sourced from the Centers for Disease Control and Prevention's surveillance data.

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