| >Element> < | align=center>2003> < | align=center>2004> < | align=center>2005> < | align=center>2006> < | align=center>2007> < | align=center>Total> |
|---|---|---|---|---|---|---|
| Human Cases (fatal) | 31 (0) | 779 (29) | 880 (20) | 278 (7) | 378 (15) | 2,318 (92) |
| Horses | 12 | 540 | 456 | 58 | 17 | 1,044 |
| Dead Birds | 96 | 3,232 | 3,046 | 1,446 | 734 | 8,566 |
| Mosquito Samples | 32 | 1,136 | 1,242 | 832 | 4,005 | 7,477 |
| Sentinel Chickens | 70 | 809 | 1,053 | 640 | 149 | 2,721 |
| Squirrels | - | 49 | 48 | 32 | 129 | |
| 1 There were 20 imported human cases. 2 There were 3 imported horse cases. | ||||||