Emerging Infectious Diseases (Dec 2003)
West Nile Virus in Mexico: Evidence of Widespread Circulation since July 2002.
Abstract
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.
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