West Nile Virus Activity in Texas, 2009 Case Breakdown

County

Human WNND*

Human WNF*

Mosquito

Horse

Other*

Total

Brazoria

0

0

0

1

0

1

Brazos

0

0

1

0

0

1

Brown

1

0

0

0

0

1

Caldwell

0

0

0

1

0

1

Cameron

0

0

0

1

0

1

Cochran

1

0

0

0

0

1

Collin

1

0

0

0

0

1

Colorado

0

0

0

1

0

1

Comal

0

1

0

0

0

1

Comanche

0

0

0

1

0

1

Dallas

13

3

78

0

0

94

Denton

3

1

8

0

0

12

Eastland

0

0

0

1

0

1

Ector

1

0

0

0

0

1

El Paso

17

3

6

0

0

26

Floyd

1

0

0

0

0

1

Fort Bend

0

0

1

0

0

1

Galveston

0

0

1

0

0

1

Grayson

0

0

0

1

0

1

Hardin

0

0

0

1

0

1

Harris

8

1

238

1

0

248

Haskell

1

1

0

0

0

2

Hidalgo**

0

0

0

0

0

0

Hockley

2

0

0

0

0

2

Hunt

0

0

0

1

0

1

Hutchinson

1

0

0

0

0

1

Jefferson

0

0

1

0

0

1

Johnson

1

0

0

1

0

2

Jones

0

0

0

1

0

1

Knox

1

0

0

0

0

1

Lamb

0

1

0

0

0

1

Lubbock

0

0

6

0

0

6

Midland

0

1

0

0

0

1

Montague

1

0

0

0

0

1

Montgomery

5

0

31

1

0

37

Navarro

2

0

0

0

0

2

Nueces

0

0

0

1

0

1

Ochiltree

0

0

0

1

0

1

Orange

1

0

1

0

0

2

Parker

0

0

0

3

0

3

Potter

1

0

0

0

0

1

Randall

1

0

2

0

0

3

San Patricio

1

0

0

0

0

1

Scurry

1

0

0

0

0

1

Sherman

1

0

0

0

0

1

Tarrant

18

9

2

2

0

31

Taylor

0

0

0

1

0

1

Tyler

1

0

0

0

0

1

Washington

0

0

0

1

0

1

Wichita

0

0

4

1

1

6

Total

85

21

380

23

1

510

*WNND = West Nile Neuroinvasive Disease is the more severe form the disease cause by the West Nile virus which incorporates the central nervous system (West Nile meningitis, West Nile encephalitis, and West Nile meningoencephalitis).

*WNF = West Nile Fever is the form of the disease cause by the West Nile virus that shows no evidence of neuroinvasion.

* West Nile virus can be isolated from a number of different animal hosts. These positive cases are placed in the “other” category.

** Counties with a “0″ in to the total column had positive bird cases of West Nile virus.