*These data are provisional and may be revised or adjusted in the future.
Cumulative Human Disease Cases by County - Louisiana, 2004
| Ascension Parish | 1 |
| Beauregard Parish | 1 |
| Bossier Parish | 10 |
| Caddo Parish | 13 |
| Calcasieu Parish | 3 |
| Caldwell Parish | 1 |
| Concordia Parish | 1 |
| East Baton Rouge Parish | 29 |
| East Feliciana Parish | 2 |
| Evangeline Parish | 1 |
| Franklin Parish | 1 |
| Jefferson Davis Parish | 1 |
| Jefferson Parish | 1 |
| Lafayette Parish | 1 |
| Livingston Parish | 9 |
| Madison Parish | 1 |
| Morehouse Parish | 2 |
| Orleans Parish | 1 |
| Ouachita Parish | 7 |
| Rapides Parish | 9 |
| Richland Parish | 1 |
| Saint Landry Parish | 4 |
| Saint Tammany Parish | 1 |
| Tangipahoa Parish | 1 |
| Union Parish | 1 |
| Washington Parish | 1 |
| Webster Parish | 1 |
| West Baton Rouge Parish | 1 |
| West Carroll Parish | 3 |