West Nile virus in Mexico: evidence of widespread circulation since July 2002.
West Nile virus (WNV) antibodies were detected in horses from five Mexican states, and WNV was isolated from a Common Raven in the state of Tabasco. Phylogenetic studies indicate that this isolate, the first from Mexico, is related to strains from the central United States but has a relatively high degree of sequence divergence.
Estrada-Franco, JG; Navarro-Lopez, R; Beasley, DWC; Coffey, L; Carrara, A-S; Travassos da Rosa, A; Clements, T; Wang, E; Ludwig, GV; Cortes, AC; Ramírez, PP; Tesh, RB; Barrett, ADT; Weaver, SC
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