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

482,297

Total cases of lyme disease confirmed nationwide (2000 to 2016).

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 4,822,970 true cases of lyme of disease in U.S. since the year 2000.

Most Infected Counties

County Total Cases
Dutchess County, New York 11,963
Chester County, Pennsylvania 10,611
Fairfield County, Connecticut 9,387
Connecticut (Unknown County) 9,002
Middlesex County, Massachusetts 8,395
Bucks County, Pennsylvania 8,186
Montgomery County, Pennsylvania 7,723
Morris County, New Jersey 7,679
Columbia County, New York 7,026
Orange County, New York 6,466
New London County, Connecticut 6,176
Plymouth County, Massachusetts 6,049
Hunterdon County, New Jersey 5,839
Suffolk County, New York 5,776
New Haven County, Connecticut 5,563
Monmouth County, New Jersey 5,344
Worcester County, Massachusetts 5,304
Norfolk County, Massachusetts 5,252
York County, Pennsylvania 5,225
New Castle County, Delaware 5,223
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Data Sources

All Lyme disease prevalence data courtesy of the Centers for Disease Control and Prevention.

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