*These data are provisional and may be revised or adjusted in the future.
Cumulative Mosquito Infections by County - Ohio, 2003
| Allen County | 2 |
| Ashland County | 4 |
| Athens County | 8 |
| Brown County | 2 |
| Butler County | 24 |
| Clermont County | 9 |
| Crawford County | 1 |
| Cuyahoga County | 166 |
| Darke County | 1 |
| Delaware County | 5 |
| Erie County | 3 |
| Franklin County | 80 |
| Fulton County | 7 |
| Greene County | 1 |
| Hamilton County | 160 |
| Hancock County | 3 |
| Hocking County | 2 |
| Lake County | 55 |
| Licking County | 1 |
| Lorain County | 144 |
| Lucas County | 16 |
| Mahoning County | 12 |
| Marion County | 1 |
| Medina County | 6 |
| Mercer County | 1 |
| Montgomery County | 27 |
| Portage County | 3 |
| Stark County | 18 |
| Summit County | 27 |
| Vinton County | 4 |
| Warren County | 2 |
| Wayne County | 2 |
| Wyandot County | 2 |