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Reported Cases of Lyme Disease by Year, United States, 2003-2012

graph confirmed and probable cases from 2003 through 2012

The graph displays the number of reported cases of Lyme disease from 2003 through 2012. The number of confirmed cases ranged from a low of 19,804 in 2004 to high of 29,959 in 2009.

*National Surveillance case definition revised in 2008 to include probable cases; details at http://www.cdc.gov/osels/ph_surveillance/nndss/casedef/lyme_disease_2008.htm

 
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