West Nile Virus Surveillance Program
2009 Surveillance Data 
Go to Current National Data

 

2000 - 2001 - 2002 - 2003 - 2004 -
2005 - 2006 - 2007 - 2008 - 2009 - 2010 - 2011 - 2012 - 2013

2009 Humans

Category Number
Clinical Positive Individuals 52
Positive Blood Donors 7
Cumulative Clinical and Blood Donor Cases 59

 

2009 Human Clinical Specifics

Counties 27

Age Range

-

0-13

2

14-25

6

26-50

22

51-64

9

65+

13

Gender

-
Male 33

Female

19

Diagnosis

-

WNV Meningoencephalitis

11

WN Fever

41

WNV Other Neuroninvasive

0

- -

Hospitalized

21

Deaths

0

 

2009 Animals

Surveillance
Type
Number
Reported
Number
Tested
Number
Positives
Maps
Dead Birds NA 303 25 PDF Map
Mosquito Pools NA 2,874 117 PDF Map
Equines 3 3 3 PDF Map
Dogs NA NA NA NA

 

Dead Birds

Testing criteria for dead birds in Nebraska are only birds that have been dead less than 24 hours; crows, blue jays, and magpies will be accepted for testing; and birds will only be accepted from counties with less than five positive dead birds. Specific date and address information (including county and zip code) is requested for birds that are submitted for testing.

Mosquitoes

Adult mosquitoes are collected every two weeks from routine surveillance sites around the state. Supplemental mosquito trapping may be performed by Health and Human Services System personnel as needed. A mosquito sample is all mosquitoes from one CDC-miniature light trap ran for one night at a single location. Samples are sorted and female (bloodfeeding) mosquitoes are identified to species and counted. Mosquitoes in the genus Culex are pooled in vials containing up to 50 mosquitoes of the same species and are submitted for testing for West Nile virus.

Image of a mosquito trap.  Close up image of a mosquito trap.  Image of a New Jersey light trap.

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