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Lyme Disease Statistics


Reported Cases of Lyme Disease, United States, 2007 

Charts and Tables
Lyme disease cases reported to CDC

By Year

By State

By Age and Sex

By Month

By Symptoms

Lyme Disease Surveillance in Morbidity Mortality Weekly Reports

Lyme disease—United States, 2003-2005.

Lyme disease—United States, 2001-2002.

Lyme disease--United States, 2000.

Lyme disease--United States, 1999.

Surveillance for Lyme disease--United States, 1992-1998

Frequently Asked Questions about Lyme Disease Surveillance

How are cases reported to CDC?

As with most other diseases, reporting requirements for Lyme disease are determined by state laws or regulations. In most states, Lyme disease cases are reported by licensed health care providers, diagnostic laboratories, or hospitals. States and the District of Columbia share their data with CDC, which compiles and publishes the information for the Nation.

Are more recent numbers available?

Cases of Lyme disease and other reportable conditions are published each week in the MMWR . However, these weekly numbers are provisional and often change when all the data become available after the end of the year. CDC publishes finalized data, such as that above, only after all states & territories have certified their reports. Finalized data for a given year are generally not available until the fall of the following year.

What is a surveillance case definition?

Reporting of all nationally notifiable diseases, including Lyme disease, is based on standard surveillance case definitions developed by the Council of State and Territorial Epidemiologists (CSTE) and CDC. The usefulness of public health surveillance data depends on its uniformity, simplicity, and timeliness. Surveillance case definitions establish uniform criteria for disease reporting and should not be used as the sole criteria for establishing clinical diagnoses, determining the standard of care necessary for a particular patient, setting guidelines for quality assurance, or providing standards for reimbursement. To read the national surveillance case definition for Lyme disease, click here.

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Date last modified: February 26, 2008
Content source:
Division of Vector Borne Infectious Diseases
National Center for Zoonotic, Vector-Borne, and Enteric Diseases

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