Human West Nile Virus Infections: Colorado, 2009
Updated June 24, 2010

  New cases Clinical diagnosis Total cases Total deaths
Fever Meningitis Encephalitis
County of Residence . 3 2 1 6 1
Adams
Arapahoe . 7 3 . 10 .
Boulder . 11 . 1 12 .
Broomfield . 1 . . 1 .
Cheyenne . 1 . 1 2 1
Denver . 1 . . 1 .
Jefferson . 7 . 1 8 .
La Plata . . . 1 1 .
Larimer . 15 4 6 25 .
Logan . 1 . 1 2 .
Mesa . . 1 1 2 1
Morgan . 3 . . 3 .
Otero . 3 3 1 7 .
Prowers . 4 1 . 5 .
Pueblo . 1 . 1 2 .
Sedgwick . . 1 . 1 .
Weld . 10 3 2 15 .
COLORADO . 68 18 17 103 3

Counties not listed have no verified human cases of WNV
 

 


Clinical Diagnosis Associated with Human West Nile Virus Infections: Colorado, 2009

  % of cases
TYPE of WEST NILE INFECTION 66.0
Fever
Meningitis 17.5
Encephalitis 16.5
Total 100.0

 
 
 

 


Cases of West Nile Virus by Age Group & Gender: Colorado, 2009

  GENDER Total
Male Female 9
AGE GROUP 0 0 0 0
0-9
10-19 2 7 0 9
20-29 4 4 0 8
30-39 4 5 0 9
40-49 10 11 0 21
50-59 16 6 0 22
60-69 13 10 1 24
70-79 3 5 0 8
80+ 0 2 0 2
Total 52 50 1 103

 

 


Analysis of West Nile Virus Cases by Age

  Age
N Mean Median Min Max
TYPE of WEST NILE INFECTION 68 47.2 49.5 12 77
Fever
Meningitis 18 49.0 53.5 11 76
Encephalitis 17 60.5 67.0 26 86
Overall 103 49.7 51.0 11 86

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