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Lyme Disease Incidence by Month of Illness Onset, New Jersey, 2007-2020

Indicator Report Data View Options

Why Is This Important?

Lyme disease is primarily caused by bacteria called ''Borrelia burgdorferi'' and is transmitted to humans through the bite of infected blacklegged ticks (or deer ticks, ''Ixodes scapularis''). Typical symptoms include chills, fever, bull's-eye rash, headache, and muscle pain. Lyme disease affects the central nervous system, heart, and joints in its advanced stages.


Incidence (new cases) of Lyme disease Data were captured by county of residence, not county of exposure.

Data Notes

The graph displays the confirmed cases of Lyme disease with illness onset date by month from 2007 through 2020 in New Jersey. Lyme disease cases are most likely to have illness onset in June and July and less likely to have illness onset from November through March. Cases with blank illness onset date were excluded.

Data Source

Communicable Disease Reporting and Surveillance System (CRDSS), Communicable Disease Service, New Jersey Department of Health

How the Measure is Calculated

  • Numerator:

    Number of Lyme disease cases reported to the New Jersey Department of Health
  • Denominator:

    Estimated number of persons in the population

Health Topic Pages Related to: Lyme Disease Incidence

Indicator Data Last Updated On 03/21/2022, Published on 06/05/2024
Communicable Disease Service, Infectious and Zoonotic Disease Program, New Jersey Department of Health, Trenton, NJ, 08625 (