Volume 18, Number 2—February 2012
Research
Effect of Surveillance Method on Reported Characteristics of Lyme Disease, Connecticut, 1996–2007
Starr-Hope Ertel
, Randall S. Nelson, and Matthew L. Cartter
, Randall S. Nelson, and Matthew L. Cartter
Table 5
Lyme disease cases, by clinical manifestation, season, and surveillance method, Connecticut, 1996–2007
| Clinical manifestation/season | No. (%) cases |
||||
|---|---|---|---|---|---|
| PS, n = 10,535* | AS, n = 8,281* | ELS, n = 1,767* | MLS, n = 8,685* | Total, n = 29,268 | |
| All | |||||
| Winter | 278 (2.6) | 244 (2.9) | 76 (4.3) | 548 (6.3) | 1,146 (3.9) |
| Spring | 1,029 (9.8) | 923 (11.1) | 154 (8.7) | 1,118 (12.9) | 3,224 (11.0) |
| Summer | 8,121 (77.1) | 6,234 (75.3) | 1,276 (72.2) | 5,707 (65.7) | 21,338 (72.9) |
| Fall | 1,107 (10.5) | 880 (10.6) | 261 (14.8) | 1,312 (15.1) | 3,560 (12.2) |
| Erythema migrans | |||||
| Winter | 84 (0.8) | 56 (0.7) | 7 (0.4) | 73 (0.8) | 220 (0.8) |
| Spring | 741 (7.0) | 624 (7.5) | 34 (1.9) | 425 (4.9) | 1,824 (6.2) |
| Summer | 7,315 (69.4) | 5,500 (66.4) | 993 (56.2) | 4,164 (47.9) | 17,972 (61.4) |
| Fall | 739 (7.0) | 515 (6.2) | 78 (4.4) | 501 (5.8) | 1,833 (6.3) |
| Total | 8,879 (84.3) | 6,695 (80.8) | 1,112 (62.9) | 5,163 (59.4) | 21,849 (74.7) |
| Late manifestations | |||||
| Winter | 194 (11.7) | 188 (11.9) | 69 (10.5) | 475 (13.5) | 926 (3.2) |
| Spring | 288 (17.4) | 299 (18.8) | 120 (18.3) | 693 (19.7) | 1,400 (4.8) |
| Summer | 806 (48.7) | 734 (46.3) | 283 (43.2) | 1,543 (43.8) | 3,366 (11.5) |
| Fall | 368 (22.2) | 365 (23.0) | 183 (27.9) | 811 (23.0) | 1,727 (5.9) |
| Total | 1,656 (15.7) | 1,586 (19.2) | 655 (37.1) | 3,522 (40.6) | 7,419 (25.3) |
*PS, passive surveillance; AS, active surveillance; ELS, enhanced laboratory surveillance; MLS, mandatory laboratory surveillance.
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