Human West Nile Virus Infections: Colorado, 2004
Updated March 12, 2010

  New cases Clinical diagnosis Total cases Total deaths
Fever Meningitis Encephalitis
County of Residence . 12 3 . 15 .
Adams
Archuleta . 2 . . 2 .
Baca . 1 . . 1 .
Boulder . 13 . 1 14 .
Delta . 25 1 1 27 .
Denver . 2 1 . 3 .
Douglas . 1 . . 1 .
El Paso . 1 1 . 2 .
Fremont . 4 . . 4 .
Garfield . 5 . . 5 .
Gunnison . 1 . . 1 .
Jefferson . 7 . 1 8 .
Kit Carson . 2 . . 2 .
La Plata . 19 . 2 21 .
Larimer . 16 . 1 17 .
Logan . 5 . . 5 .
Mesa . 107 10 10 127 4
Montezuma . . 3 1 4 .
Montrose . 9 1 1 11 .
Morgan . 1 . . 1 .
Park . 1 . . 1 .
Phillips . 2 . . 2 .
Prowers . 3 . . 3 .
Pueblo . 4 . . 4 .
Rio Blanco . 1 . . 1 .
Sedgwick . 1 . . 1 .
Weld . 5 2 1 8 .
COLORADO . 250 22 19 291 4

Counties not listed have no verified human cases of WNV
 

 


Clinical Diagnosis Associated with Human West Nile Virus Infections: Colorado, 2004

  % of cases
TYPE of WEST NILE INFECTION 85.9
Fever
Meningitis 7.6
Encephalitis 6.5
Total 100.0

 
 
 

 


Cases of West Nile Virus by Age Group & Gender: Colorado, 2004

  GENDER Total
Male Female
AGE GROUP 2 3 5
0-9
10-19 7 6 13
20-29 16 10 26
30-39 24 20 44
40-49 28 48 76
50-59 35 27 62
60-69 14 15 29
70-79 11 19 30
80+ 3 3 6
Total 140 151 291

 

 


Analysis of West Nile Virus Cases by Age

  Age
N Mean Median Min Max
TYPE of WEST NILE INFECTION 250 46.3 46.5 6 86
Fever
Meningitis 22 45.3 41.0 6 78
Encephalitis 19 63.6 67.0 23 90
Overall 291 47.3 47.0 6 90

The Mean or Average is the sum of all ages, divided by the total number cases
The Median is the AGE in which half the cases are higher in AGE and half the cases are lower in AGE
An age of 0 represents a child less than 1 year of age