Lyme Disease Maps: Historical Data

Reported Cases of Lyme Disease – United States, 2018

U.S. map reported cases of Lyme Disease at a county-wide level

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Each dot represents one case of Lyme disease and is placed randomly in the patient’s county of residence. The presence of a dot in a state does not necessarily mean that Lyme disease was acquired in that state. People travel between states, and the place of residence is sometimes different from the place where the patient became infected. Many high incidence states have modified surveillance practices. Contact your state health department for more information.

Reported Cases of Lyme Disease – United States, 2017

U.S. map showing reported cases of Lyme Disease at a county-wide level for 2017. Cases are concentrated in the north east

Click for larger image pdf icon[PDF – 1 page]
Each dot represents one case of Lyme disease and is placed randomly in the patient’s county of residence. The presence of a dot in a state does not necessarily mean that Lyme disease was acquired in that state. People travel between states, and the place of residence is sometimes different from the place where the patient became infected.

Reported Cases of Lyme Disease – United States, 2016

U.S. map showing reported cases of Lyme Disease at a county-wide level for 2016. Cases are concentrated in the north east.

Click for larger image pdf icon[PDF – 1 page]
Each dot represents one case of Lyme disease and is placed randomly in the patient’s county of residence. The presence of a dot in a state does not necessarily mean that Lyme disease was acquired in that state. People travel between states, and the place of residence is sometimes different from the place where the patient became infected.

In 2016, Massachusetts transitioned to a surveillance method that relies primarily on laboratory reports. This method does not currently align with the national surveillance case definition as set by the Council of State and Territorial Epidemiologists (CSTE). Therefore, information on most Lyme disease cases occurring in Massachusetts is not sent to CDC. Please contact the MA Department of Public Healthexternal icon for case numbers.

Reported Cases of Lyme Disease – United States, 2015

U.S. map showing reported cases of Lyme Disease at a county-wide level for 2015. Cases are concentrated in the north east

Click for larger image pdf icon[PDF – 1 page]
Each dot represents one case of Lyme disease and is placed randomly in the patient’s county of residence. The presence of a dot in a state does not necessarily mean that Lyme disease was acquired in that state. People travel between states, and the place of residence is sometimes different from the place where the patient became infected.

Reported Cases of Lyme Disease – United States, 2014

U.S. map showing reported cases of Lyme Disease at a county-wide level for 2014. Cases are concentrated in the north east

Click for larger image pdf icon[PDF – 1 page]
Each dot represents one case of Lyme disease and is placed randomly in the patient’s county of residence. The presence of a dot in a state does not necessarily mean that Lyme disease was acquired in that state. People travel between states, and the place of residence is sometimes different from the place where the patient became infected.

Reported Cases of Lyme Disease – United States, 2013

U.S. map showing reported cases of Lyme Disease at a county-wide level for 2013. Cases are concentrated in the north east.

Click for larger image pdf icon[PDF – 1 page]
Each dot represents one case of Lyme disease and is placed randomly in the patient’s county of residence. The presence of a dot in a state does not necessarily mean that Lyme disease was acquired in that state. People travel between states, and the place of residence is sometimes different from the place where the patient became infected.

Reported Cases of Lyme Disease – United States, 2012

U.S. map showing reported cases of Lyme Disease at a county-wide level for 2012. Cases are concentrated in the north east.

Click for larger image pdf icon[PDF – 1 page]
Each dot represents one case of Lyme disease and is placed randomly in the patient’s county of residence. The presence of a dot in a state does not necessarily mean that Lyme disease was acquired in that state. People travel between states, and the place of residence is sometimes different from the place where the patient became infected.