Partial genetic characterization of West Nile virus strains, New York State, 2000

Gregory D. Ebel, Alan P. Dupuis, Kiet Ngo, David Nicholas, Elizabeth Kauffman, Susan A. Jones, Donna Young, Joseph Maffei, Pei Yong Shi, Kristen Bernard, Laura D. Kramer

Research output: Contribution to journalArticlepeer-review

107 Scopus citations


We analyzed nucleotide sequences from the envelope gene of 11 West Nile (WN) virus strains collected in New York State during the 2000 transmission season to determine whether they differed genetically from each other and from the initial strain isolated in 1999. The complete envelope genes of these strains were amplified by reverse transcription-polymerase chain reaction. The resulting sequences were aligned, the genetic distances were computed, and a phylogenetic tree was constructed. Ten (0.7%) of 1,503 positions in the envelope gene were polymorphic in one or more sequences. The genetic distances were 0.003 or less. WN virus strains circulating in 2000 were homogeneous with respect to one another and to a strain isolated in 1999.

Original languageEnglish (US)
Pages (from-to)650-653
Number of pages4
JournalEmerging infectious diseases
Issue number4
StatePublished - 2001
Externally publishedYes

ASJC Scopus subject areas

  • Epidemiology
  • Microbiology (medical)
  • Infectious Diseases


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