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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
immunology and microbiology
Effects of temperature on emergence and seasonality of West Nile virus in California
American Journal of Tropical Medicine and Hygiene, Volume 86, No. 5, Year 2012
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Description
Temperature has played a critical role in the spatiotemporal dynamics of West Nile virus transmission throughout California from its introduction in 2003 through establishment by 2009. We compared two novel mechanistic measures of transmission risk, the temperature-dependent ratio of virus extrinsic incubation period to the mosquito gonotrophic period (BT), and the fundamental reproductive ratio (R0) based on a mathematical model, to analyze spatiotemporal patterns of receptivity to viral amplification. Maps of BT and R0 were created at 20-km scale and compared throughout California to seroconversions in sentinel chicken flocks at half-month intervals. Overall, estimates of BT and R0 agreed with intensity of transmission measured by the frequency of sentinel chicken seroconversions. Mechanistic measures such as these are important for understanding how temperature affects the spatiotemporal dynamics of West Nile virus transmission and for delineating risk estimates useful to inform vector control agency intervention decisions and communicate outbreak potential. Copyright © 2012 by The American Society of Tropical Medicine and Hygiene.
Authors & Co-Authors
Hartley, David M.
United States, Bethesda
Fogarty International Center
United States, Washington, D.c.
Georgetown University Medical Center
Barker, Christopher M.
United States, Bethesda
Fogarty International Center
United States, Davis
University of California, Davis
Le Menach, Arnaud
United States, Bethesda
Fogarty International Center
United States, Washington
Center for Disease Dynamics, Economics and Policy
Gaff, Holly D.
United States, Bethesda
Fogarty International Center
United States, Norfolk
Old Dominion University
Reisen, William K.
United States, Bethesda
Fogarty International Center
United States, Davis
University of California, Davis
Statistics
Citations: 104
Authors: 5
Affiliations: 5
Identifiers
Doi:
10.4269/ajtmh.2012.11-0342
ISSN:
00029637
Research Areas
Health System And Policy
Sexual And Reproductive Health
Study Design
Randomised Control Trial