Here are the latest statistics on WNV in East Texas.  It appears we have more REPORTED cases in people than in horses.  We assume that vaccination, "herd immunity," and clinical diagnosis vs lab testing are factors in the low numbers of equine cases reported.

Our thanks to all the veterinarians, physicians, and local health department staff who help us obtain case reports and do follow-up.

 West Nile Virus Statistics

Annual Summaries

West Nile Virus in Texas, 2005

Sample Type

Cases

Counties

Bird

200

14

Human WNF

43

17

Human WNND

82

28

Mosquito

314

22

Horse

19

18

Other

126

37

Total

659

*52

 

West Nile Virus in Texas, 2004

Sample Type

Cases

Counties

Bird

490

25

Human WNF

0

0

Human WNND

119

40

Mosquito

423

22

Horse

168

71

Other

119

40

Total

1200

*101

 

West Nile Virus in Texas, 2003

Sample Type

Cases

Counties

Bird

532

70

Human WNF

0

0

Human WNND

439

86

Mosquito

1056

37

Horse

716

164

Other

450

87

Total

2754

*190

 

West Nile Virus in Texas, 2002

Sample Type

Cases

Counties

Bird

519

61

Human WNF

0

0

Human WNND

202

37

Mosquito

259

15

Horse

1699

204

Other

202

37

Total

2679

*213

 

* West Nile Virus may be found in multiple sources in the same county.

A major source of West Nile horse data is the Texas Veterinary Medical Diagnostic Laboratory.

 

 

East Texas Cases -- 2005

 

 

 

 

 

 

 

Encephalitis Horses 2005

 

 

 

 

 

 

 

Onset Date

DVM City

Region

County of Horse

Diag

1/26/2005

Carthage

4

Panola

WNV

7/26/2005

Jasper

5N

Newton

WNV

8/1/2005

Winnsboro

4

Camp

WNV

8/23/2005

Clarksville

4

Red River

WNV

9/15/2005

Tyler

4

Smith

WNV

8/26/2005

Gilmer

4

Upshur

WNV

 

Gilmer

4

Upshur

WNV

 

 

 

 

 

Encephalitis Birds 2005

 

 

Date Collected

Species

Location

County

Diagnosis

6/27/2005

Blue Jay

Lufkin

Angelina

WNV

7/18/2005

Blue Jay

Carthage

Panola

WNV

7/22/2005

Blue Jay

Tyler

Smith

WNV

7/28/2005

Blue Jay

Longview

Gregg

WNV

7/30/2005

Blue Jay

Tyler

Smith

WNV

8/2/2005

Blue Jay

Marshall

Harrison

WNV

8/9/2005

Blue Jay

Tyler

Smith

WNV

8/24/2005

Blue Jay

Pittsburg

Camp

WNV

 

 

 

 

 

 

 

 

 

 

Encephalitis Mosquitoes 2005

 

 

Date Collected

Type Trap

City

County

Diagnosis

7/25/2005

Gravid

Tyler

Smith

WNV

7/25/2005

Gravid

Tyler

Smith

WNV

8/8/2005

Gravid

Tyler

Smith

WNV

 

 

 

 

 

 

 

 

 

 

Encephalitis Human 2005

 

 

Onset

Age Range

 

County

Diagnosis

7/13/2005

Adult

 

Angelina

WNV

7/4/2005

Adult

 

Angelina

WNV

8/12/2005

Adult

 

Angelina

WNV

9/9/2005

Adult

 

Gregg

WNV

8/22/2005

Adult

 

Henderson

WNND

7/11/2005

Adult

 

Angelina

WN Fever

7/19/2005

Adult

 

Rusk

WNND

 

 

 

 

 

Texas Department of Health, PHR 4 & 5N

 

 

Zoonosis Control

 

 

 

 

903 533-5212