Lyme disease - total reported cases by year, United States
Lyme disease - total reported cases by year, United States
The increased number of cases in 2022 reflects a change in the national surveillance case definition to rely on laboratory-based reporting in high incidence areas. Case counts for 2019 and 2020 are artificially low due to incomplete reporting during the COVID-19 pandemic.
* These data were reported according to different Lyme disease case definitions. Only major case definition changes are denoted.
