phylogenetic analysis of west nile virus, nuevo leon state, mexico.west nile virus rna was detected in brain tissue from a horse that died in june 2003 in nuevo leon state, mexico. nucleotide sequencing and phylogenetic analysis of the premembrane and envelope genes showed that the virus was most closely related to west nile virus isolates collected in texas in 2002.200415324558
antibody detection against borrelia burgdorferi in horses located in the suburban areas of monterrey, nuevo león.the aim of the present study was to determine the presence of borrelia burgdorferi antibodies in horses from the metropolitan area of monterrey, nuevo león, méxico. blood serum was obtained from a total of 100 horses residing at different counties in the area. from each animal data was obtained on age, sex, county of residence, presence of ectoparasites and clinical signs. all sera samples were analyzed by indirect immunofluoresence and the sera that resulted positive to this test was analyzed b ...200117061503
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