Reported Cases of Lyme Disease by Year, United States, 2002-2011
The graph displays the number of reported cases of Lyme disease from 2002 through 2011. 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


