These county and county equivalent data data are based on information voluntarily reported by state health officials and federal agenciesto CDC. West Nile Virus (WNV) infection was determined by laboratory testing on animals other than wild birds (such as pets, livestock, and wildlife) with symtoms of WNV infection. Note that the map includes all areas of positive(confirmed or probable) WNV results, but not necessarily all areas with submitted samples or no reports.
| Note: These data are provisional and may be revised or adjusted in the future |
| Big Horn County | 5 |
| Blaine County | 8 |
| Carbon County | 1 |
| Carter County | 4 |
| Chouteau County | 2 |
| Custer County | 11 |
| Dawson County | 5 |
| Fallon County | 2 |
| Garfield County | 4 |
| Hill County | 3 |
| McCone County | 3 |
| Musselshell County | 1 |
| Park County | 1 |
| Petroleum County | 2 |
| Phillips County | 15 |
| Powder River County | 7 |
| Prairie County | 1 |
| Richland County | 8 |
| Roosevelt County | 4 |
| Rosebud County | 6 |
| Sheridan County | 1 |
| Stillwater County | 2 |
| Treasure County | 2 |
| Valley County | 10 |
| Wibaux County | 4 |
| Yellowstone County | 22 |
| Cumulative Report Maps for the year 2002, Montana | |||
| Cumulative Human | Cumulative Mosquito | Cumulative Bird | Cumulative Sentinel Flock |
For further information or questions, please contact
the Centers for Disease Control and Prevention:
email: dvbid@cdc.gov
(970) 221-6400