Human West Nile Virus Infections: Colorado, 2007
Updated November 24, 2008

  New cases Clinical diagnosis Total cases Total deaths
Fever Meningitis Encephalitis
County of Residence . 27 2 3 32 .
Adams
Arapahoe . 15 2 1 18 .
Baca . . . 1 1 .
Bent . 2 1 1 4 .
Boulder . 78 12 5 95 2
Broomfield . 10 1 . 11 .
Cheyenne . 2 . . 2 .
Crowley . . 1 . 1 .
Custer . 1 . . 1 .
Delta . 4 . 2 6 .
Denver . 16 4 7 27 2
Douglas . 7 1 . 8 .
El Paso . 4 . . 4 .
Fremont . 10 1 4 15 .
Garfield . 5 . . 5 .
Huerfano . 1 . . 1 .
Jefferson . 30 . 3 33 .
La Plata . 3 . . 3 .
Larimer . 90 3 1 94 .
Las Animas . 1 . 1 2 .
Lincoln . 3 . . 3 .
Logan . 9 . . 9 .
Mesa . 28 1 8 37 2
Montezuma . 3 . 1 4 .
Montrose . 1 1 1 3 .
Morgan . 11 1 2 14 .
Otero . 7 . 3 10 .
Phillips . 2 . . 2 .
Prowers . 7 . . 7 .
Pueblo . 16 2 2 20 1
Washington . 2 . 1 3 .
Weld . 80 12 6 98 .
Yuma . 3 . 2 5 .
COLORADO . 478 45 55 578 7

Counties not listed have no verified human cases of WNV
 

 


Clinical Diagnosis Associated with Human West Nile Virus Infections: Colorado, 2007

  % of cases
TYPE of WEST NILE INFECTION 82.7
Fever
Encephalitis 9.5
Meningitis 7.8
Total 100.0

 
 
 

 


Cases of West Nile Virus by Age Group & Gender: Colorado, 2008

  GENDER Total
Male Female
AGE GROUP 0 1 1
0-4
5-9 1 2 3
10-14 4 4 8
15-19 16 10 26
20-24 3 13 16
25-29 8 16 24
30-34 15 26 41
35-39 20 29 49
40-44 31 28 59
45-49 32 43 75
50-54 46 45 91
55-59 23 34 57
60-64 27 21 48
65-69 19 11 30
70-74 12 11 23
75-79 7 4 11
80-84 6 5 11
85-89 1 1 2
90+ 1 2 3
Total 272 306 578

 

 


Analysis of West Nile Virus Cases by Age

  Age
N Mean Median Min Max
TYPE of WEST NILE INFECTION 478 46.2 48.0 4 91
Fever
Meningitis 45 45.9 48.0 10 81
Encephalitis 55 59.7 60.0 16 92
Overall 578 47.5 49.0 4 92

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