Official Site of The State of New Jersey
Lyme Disease Incidence by Year, New Jersey, 2007 to 2023
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.
Definition
Incidence (new cases) of Lyme disease
Data Notes
The graph displays the incidence rate of Lyme Disease from 2007 through 2023 in New Jersey. Annual estimates of the resident population (July 1, 2007-2023) were used to calculate New Jersey Lyme disease incidence rates by year. National surveillance case definition was revised in 2008 to include probable cases. 2007 incidence rate was calculated using confirmed cases. Incidence rates from 2008 to 2021 were calculated using confirmed and probable cases. In 2022, the national surveillance case definition for Lyme disease was updated to a laboratory-based surveillance strategy. This resulted in an expected higher number of cases compared to prior years.Data Sources
- Communicable Disease Reporting and Surveillance System (CRDSS), Communicable Disease Service, New Jersey Department of Health
(http://www.nj.gov/health/cd/reporting/cdrss/) - Population Estimates, State Data Center, New Jersey Department of Labor and Workforce Development
(https://www.nj.gov/labor/labormarketinformation/demographics/population-household-estimates/)
How the Measure is Calculated
Numerator:
Number of Lyme disease cases reported to the New Jersey Department of HealthDenominator:
Estimated number of persons in the population