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Article

Emergence of attenuated West Nile virus variants in Texas, 2003.

Virology - 5 Dec 2004

Davis C Todd, Beasley David W C, Guzman Hilda, Siirin Marina, Parsons Ray E, Tesh Robert B, Barrett Alan D T

Abstract excerpt

In order to understand how West Nile virus (WNV) has evolved since its introduction into North America, we have studied the genetic and phenotypic variation among WNV isolates collected in various areas during consecutive transmission seasons. The present report describes for the first time phenotypic changes occurring in the North American WNV population. Several isolates collected in Texas during 2003 display a...

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PMID: 15527859
DOI: 10.1016/j.virol.2004.09.016

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