2006 West Nile Virus Infections by County

This chart updated weekly;
last update October 13, 2006

 

Humans

Horses

Birds

Mosquito
Samplings
*

Totals

County  Positives  Positives Positives   Positives  Positives
Beaverhead
  
                 
Big Horn
1
              
1
Blaine  
3
8
11
Broadwater              
Carbon
1
          
1
Carter
                 
Cascade
8
7
       
15
Chouteau                  
Custer
1
         
1
Daniels                 
Dawson
2
       
1
3
Deer Lodge                 
Fallon                 
Fergus
                 
Flathead
2
4
       
6
Gallatin
3
           
3
Garfield
               
Glacier  
1
       
1
Golden Valley          
Granite                 
Hill                
Jefferson                 
Judith Basin                 
Lake  
1
       
1
Lewis & Clark  
1
 
2
3
Liberty         
Lincoln               
Madison
1
   
   
   
1
McCone
                 
Meagher          
Mineral          
Missoula
2
1
   
3
Musselshell          
Park                  
Petroleum                  
Phillips  
1
   
9
10
Pondera  
1
        
1
Powder River
         
Powell                 
Prairie
       
3
3
Ravalli
1
3
 
1
5
Richland
         
Roosevelt
1
     
1
Rosebud
1
1
   
2
Sanders
1
     
1
Sheridan      
4
4
Silver Bow          
Stillwater
4
     
4
Sweet Grass      
1
1
Teton          
Toole          
Treasure
         
Valley
         
Wheatland          
Wibaux
         
Yellowstone
7
2
1
   
10
*Other               
Total
36
23
4
29
92
 **Other may include cases that are WNV cases but are believed to have acquired the disease in another state.

 Montana Human WNV Cases
 
Montana Human WNV Cases as of June 6, 2006
 Age Groups
 Number
 Percent
 
 Clinical Features
 Number
 Percent
 0 to 9
0
0%
 
 Asymptomatic
2
5.6%
 10 to 19
0
0%
    
 Fever
25
69.4%
 20 to 29
2
5.6%
 
 Mening/Enceph
9
25.0%
 30 to 39
1
2.8%
 
 Unknown/Pending
0
0%
 40 to 49
9
25.0%
 
Total
36
100%
 50 to 59
12
33.3%
 
   
 60 to 69
8
22.2%
 
Hospitalization
Number
Percent
 70 to 79
3
8.3%
 
 No
25
69.4%
 80 to 89
1
2.8%
 
 Yes
11
30.6%
 90 to 99
0
0%
 
 Unknown/Pending
0
0%
 
 
Total
36
100%
 Total
36
100%
  Deaths
0
100.0%

*MOSQUITO SAMPLES reflect results from counties that are part of a sampling effort. In these areas, single samples of up to 50 mosquitoes were tested for WNV.

CAUTION - Counties not identified with WNV may still have the virus present despite the lack of positive test results . It should be presumed that the virus can be found anyplace in Montana and all residents should follow the recommended precautions.

Page last updated 10/16/2006