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Volume 9, Number 7—July 2003
Dispatch

Serologic Evidence of West Nile Virus Infection in Horses, Coahuila State, Mexico

Bradley J. Blitvich*, Ildefonso Fernandez-Salas†, Juan F. Contreras-Cordero†, Nicole L. Marlenee*, Jose I. Gonzalez-Rojas†, Nicholas Komar‡, Duane J. Gubler‡, Charles H. Calisher*, and Barry J. Beaty*Comments to Author 
Author affiliations: *Colorado State University, Fort Collins, Colorado, USA; †Universidad Autonoma de Nuevo Leon, Nuevo Leon, Mexico; ‡Centers for Disease Control and Prevention, Fort Collins, Colorado, USA

Main Article

Table

Summary of serologic data for horses in Coahuila State, Mexicoa

Horse Study site Clinical illness % inhibition by ELISAb cPRNT90 titer
PRNT diagnosis
WNV SLEV
H-1
Ciudad Acuña
No
90
>320
—d
WNV
H-2
Ciudad Acuña
No
5


Negative
H-3
Ciudad Acuña
No
0


Negative
H-4
Ciudad Acuña
No
0


Negative
H-5
Ciudad Acuña
No
90
>320
40
WNV
H-6
Ciudad Acuña
No
93
>320

WNV
H-7
Ciudad Acuña
No
93
>320

WNV
H-8
Ciudad Acuña
Yes
93
>320

WNV
H-9
Ciudad Acuña
Yes
86
>320

WNV
H-10
Ciudad Acuña
Yes
90
>320
20
WNV
H-11
Ciudad Acuña
No
89
>320

WNV
H-12
Ciudad Acuña
No
92
>320
20
WNV
H-13
Ciudad Acuña
Yes
91
>320

WNV
H-14
Ciudad Acuña
Yes
78
>320
20
WNV
H-15
Jiménez
No
82
>320

WNV
H-16
Jiménez
No
25
40

WNV
H-17
Jiménez
No
7


Negative
H-18
Jiménez
No
93
>320
20
WNV
H-19
Jiménez
No
0
20
20
Flavivirus
H-20
Jiménez
No
47
40

WNV
H-21
Saltillo
No
9


Negative
H-22
Saltillo
No
15


Negative
H-23
Saltillo
No
12


Negative
H-24 Saltillo No 11 Negative

aELISA, enzyme-linked immunosorbent assay; PRNT, plaque reduction neutralization test; WNV, West Nile virus; SLEV, Saint Louis encephalitis virus.
bInhibition values >30% are considered significant.
cNeutralizing antibodies to WNV in selected horse serum samples were confirmed at Centers for Disease Control and Prevention-Division of Viral and Bacterial Infectious Diseases by PRNT.
d—, <20.

Main Article

Page created: December 22, 2010
Page updated: December 22, 2010
Page reviewed: December 22, 2010
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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