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Volume 10, Number 12—December 2004

Research

Venezuelan Equine Encephalitis Virus, Southern Mexico

José G. Estrada-Franco*, Roberto Navarro-Lopez†, Jerome E. Freier‡, Dionicio Cordova§, Tamara Clements¶, Abelardo Moncayo*, Wenli Kang*, Carlos Gomez-Hernandez#, Gabriela Rodriguez-Dominguez#, George V. Ludwig¶, and Scott C. Weaver*Comments to Author 
Author affiliations: *University of Texas Medical Branch, Galveston, Texas, USA; †Comision Mexico-Estados Unidos para la Prevencion de la Fiebre Aftosa y Otras Enfermedades Exoticas de los Animales, Mexico, Mexico City, Mexico; ‡U.S. Department of Agriculture, Fort Collins, Colorado, USA; §Instituto Nacional de Investigaciones Forestales Agricolas y Pecuarias (INIFAP) Mexico City, Mexico; ¶U.S. Army Medical Research Institute of Infectious Diseases, Ft. Detrick, Maryland, USA; #Instituto de Salud de la Secretaria de Salud de Chiapas, Tuxtla Gutierrez, Chiapas, Mexico

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Table 4

Titers of IgM, IgG and PRNT in humans positive for VEEV IgM during the sampling period, October–December, 2000a

Community Sex Age IgM titer (ELISA) IgG titer (ELISA)b PRNT titer
Roberto Barrios Female 55 100 400 40
10 de Abril Female 17 1,600 <100 80
10 de Abril Male 14 400 100 20
Isla Morelos Female 25 400 400 80
Buena Vista Female 43 6,400 100 20
Buena Vista Male 37 400 100 40
Buena Vista Male 29 100 400 160
Buena Vista Female 66 100 400 160

aIg, immunoglobulin; PRNT, plaque reduction neutralization tests; VEEV, Venezuelan equine encephalitis virus; ELISA, enzyme-linked immunosorbent assay.
bELISA titers were determined by using fourfold serum dilutions; others were determined by using twofold dilutions.

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