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Declining growth rate of West Nile virus in North America.

Authors
Type
Published Article
Journal
Journal of virology
Publication Date
Volume
81
Issue
5
Pages
2531–2534
Identifiers
PMID: 17182695
Source
Medline
License
Unknown

Abstract

To determine the demographic history of West Nile virus (WNV) in North America, we employed a coalescent method to envelope coding region data sets for the NY99 and WN02 genotypes. Although the observed genetic diversities in both genotypes were of approximately the same age, the mean rate of epidemiological growth of the WN02 population was approximately three times that of the NY99 population, a finding compatible with the recent dominance of the former genotype. However, there has also been a marked decrease in the recent growth rate of WN02, suggesting that WNV has reached its peak prevalence in North America.

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