*These data are provisional and may be revised or adjusted in the future.
Cumulative Dead Bird Infections by County - South Dakota, 2003
| Aurora County | 1 |
| Beadle County | 10 |
| Bennett County | 2 |
| Brookings County | 10 |
| Brown County | 4 |
| Butte County | 2 |
| Clay County | 12 |
| Codington County | 2 |
| Custer County | 1 |
| Davison County | 5 |
| Day County | 4 |
| Deuel County | 1 |
| Douglas County | 1 |
| Fall River County | 1 |
| Haakon County | 1 |
| Hamlin County | 3 |
| Hand County | 3 |
| Hughes County | 3 |
| Hutchinson County | 1 |
| Jerauld County | 1 |
| Kingsbury County | 2 |
| Lake County | 4 |
| Lawrence County | 2 |
| Lincoln County | 3 |
| Lyman County | 1 |
| McCook County | 2 |
| Meade County | 3 |
| Miner County | 4 |
| Minnehaha County | 8 |
| Moody County | 3 |
| Pennington County | 11 |
| Roberts County | 1 |
| Sanborn County | 5 |
| Turner County | 8 |
| Union County | 1 |
| Yankton County | 5 |