Lyme Disease Charts and Figures: Historical Data
Lyme disease—Confirmed cases by month of disease onset, United States, 2008-2018
Month of disease onset | Cases |
---|---|
January | 4,138 |
February | 3,606 |
March | 4,751 |
April | 7,167 |
May | 17,801 |
June | 57,380 |
July | 58,092 |
August | 23,354 |
September | 12,855 |
October | 11,394 |
November | 6,993 |
December | 3,945 |
Lyme disease—Confirmed cases by age and sex—United States, 2001-2018
Age Group | Male | Female |
---|---|---|
0-4 | 10,129 | 9,174 |
5-9 | 24,100 | 16,420 |
10-14 | 22,348 | 11,718 |
15-19 | 15,064 | 7,916 |
20-24 | 9,830 | 6,158 |
25-29 | 8,782 | 6,132 |
30-34 | 9,691 | 7,595 |
35-39 | 11,709 | 9,579 |
40-44 | 14,297 | 11,661 |
45-49 | 17,049 | 13,771 |
50-54 | 18,674 | 16,108 |
55-59 | 17,950 | 16,062 |
60-64 | 15,505 | 13,867 |
65-69 | 12,747 | 11,699 |
70-74 | 9,138 | 8,762 |
75-79 | 6,079 | 6,302 |
80-84 | 3,340 | 3,601 |
85-89 | 1,379 | 1,614 |
90+ | 402 | 514 |
Lyme disease—Relative frequency of clinical features among confirmed cases-United States, 2008-2018
*Data on signs/symptoms available for only 62% of 288,107 confirmed cases. Due to the way surveillance data is collected, patients with severe symptoms or later manifestations may be more likely be included in the above figure, and percentages presented may be higher than what is typically seen in a “real world” setting.
Lyme disease—Reported cases* by year, United States, 1996-2018
Year | Confirmed Cases | Probable Cases |
---|---|---|
1996 | 16,455 | — |
1997 | 12,801 | — |
1998 | 16,802 | — |
1999 | 16,273 | — |
2000 | 17,730 | — |
2001 | 17,029 | — |
2002 | 23,763 | — |
2003 | 21,273 | — |
2004 | 19,804 | — |
2005 | 23,305 | — |
2006 | 19,931 | — |
2007 | 27,444 | — |
2008 | 28,921 | 6,277 |
2009 | 29,959 | 8,509 |
2010 | 22,561 | 7,597 |
2011 | 24,364 | 8,733 |
2012 | 22,014 | 8,817 |
2013 | 27,203 | 9,104 |
2014 | 25,359 | 8,102 |
2015 | 28,453 | 9,616 |
2016 | 26,203 | 10,226 |
2017 | 29,513 | 13,230 |
2018 | 23,558 | 10,108 |
*National Surveillance case definition revised in 2008 to include probable cases.
Page last reviewed: November 22, 2019