Data and Surveillance
Possible cases of Lyme disease are reported to state and local health departments by health care providers and laboratories. State health departments classify cases according to standard criteria outlined in the Lyme disease case definition and report confirmed and probable cases as appropriate to CDC.
In 2022, approximately 63,000 cases of Lyme disease were reported to CDC by state health departments and the District of Columbia. However, this number does not reflect every case of Lyme disease that is diagnosed in the United States every year. Standard national surveillance is only one way that public health officials can track where a disease is occurring and with what frequency. Recent estimates using other methods suggest that approximately 476,000 people may be diagnosed with Lyme disease each year in the United States.
Interactive graphs, tables, and maps of reported Lyme disease data
Describes techniques used to estimate the number people diagnosed and treated for Lyme disease each year
Links to current and previous case definitions
Information on Lyme disease. Provided by the U.S. Centers for Disease Control and Prevention.
Downloadable datasets, information on interpreting Lyme disease surveillance data, and links to WONDER data