Importance of bird-to-bird transmission for the transmission of West Nile virus

Hartemink, N, Davis, S, Reiter, P, Hubálek, Z and Heesterbeek, J 2007, 'Importance of bird-to-bird transmission for the transmission of West Nile virus', Vector-Borne and Zoonotic Diseases, vol. 7, no. 4, pp. 575-584.


Document type: Journal Article
Collection: Journal Articles

Title Importance of bird-to-bird transmission for the transmission of West Nile virus
Author(s) Hartemink, N
Davis, S
Reiter, P
Hubálek, Z
Heesterbeek, J
Year 2007
Journal name Vector-Borne and Zoonotic Diseases
Volume number 7
Issue number 4
Start page 575
End page 584
Total pages 10
Publisher Mary Ann Liebert, Inc. Publishers
Abstract West Nile virus (WNV) is principally considered to be maintained in a mosquito-bird transmission cycle. Under experimental conditions, several other transmission routes have been observed, but the significance of these additional routes in nature is unknown. Here, we derive an expression for the basic reproduction number (R0) for WNV including all putative routes of transmission between birds and mosquitoes to gauge the relative importance of these routes for the establishment of WNV. Parameters were estimated from published experimental results. Sensitivity analysis reveals that R0 is sensitive to transmission between birds via close contact, but not to mosquito-to-mosquito transmission. In seasons or in areas where the mosquito-to-bird ratio is low, bird-to-bird transmission may be crucial in determining whether WNV can establish or not. We explain the use of R0 as a flexible tool to measure the risk of establishment of vector-borne diseases.
Keyword(s) Basic reproduction number
Bird-to-bird transmission
Direct transmission
Model
R0
West Nile virus
DOI - identifier 10.1089/vbz.2006.0613
Copyright notice © 2007 Mary Ann Liebert, Inc.
ISSN 1530-3667
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