*These data are provisional and may be revised or adjusted in the future.
Cumulative Human Disease Cases by County - Missouri, 2003
| Adair County | 1 |
| Boone County | 1 |
| Callaway County | 1 |
| Camden County | 2 |
| Carroll County | 1 |
| Cass County | 1 |
| Clay County | 2 |
| Clinton County | 1 |
| Greene County | 1 |
| Holt County | 1 |
| Howell County | 1 |
| Jackson County | 9 |
| Jefferson County | 3 |
| Johnson County | 1 |
| Lafayette County | 1 |
| Linn County | 1 |
| Livingston County | 1 |
| Moniteau County | 1 |
| Phelps County | 1 |
| Ray County | 1 |
| Shelby County | 1 |
| St. Charles County | 2 |
| St. Louis City | 15 |
| St. Louis County | 11 |
| Texas County | 1 |
| Vernon County | 1 |
| Worth County | 1 |