Table 1. Lyme disease cases by classification and year, 2009 to 2012.
| Year | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Case classification | 2009 | 2010 | 2011 | 2012 | Total | |||||
| N | (%) | N | (%) | N | (%) | N | (%) | N | (%) | |
| All cases | ||||||||||
| Confirmed | 115 | (79.9) | 107 | (74.8) | 188 | (70.7) | 227 | (67.2) | 637 | (71.5) |
| Probable | 29 | (20.1) | 36 | (25.2) | 78 | (29.3) | 111 | (32.8) | 254 | (28.5) |
| Total | 144 | 100 | 143 | 100 | 266 | 100 | 338 | 100 | 891 | 100 |
| Cases acquired in Canada with clinical data1 | ||||||||||
| Confirmed | 44 | (81.5) | 43 | (68.3) | 79 | (61.7) | 93 | (65.5) | 259 | (66.9) |
| All probable cases | 10 | (18.5) | 20 | (31.7) | 49 | (38.3) | 49 | (34.5) | 128 | (33.1) |
| First probable case definition | 8 | (14.8) | 15 | (23.8) | 40 | (31.3) | 24 | (16.9) | 87 | (22.5) |
| Second probable case definition | 2 | (3.7) | 5 | (7.9) | 9 | (7.0) | 25 | (17.6) | 41 | (10.6) |
| Total | 54 | 100 | 63 | 100 | 128 | 100 | 142 | 100 | 387 | 100 |
1 Cases for which detailed clinical data (symptoms and laboratory diagnosis information) and exposure information was available to distinguish the two different probable case definitions.