Serologic evidence of West Nile virus infection in horses, Coahuila State, Mexico. - Blitvich BJ; Fernandez-Salas I; Contreras-Cordero JF; Marlenee NL; Gonzalez-Rojas JI; Komar N; Gubler DJ; Calisher CH; Beaty BJ (Emerging infectious diseases, 2003)