reference : Effects of temperature on emergence and seasonality of West Nile virus in California

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Bibliographic fields
reftype Journal Article
Abstract 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 (R(0)) based on a mathematical model, to analyze spatiotemporal patterns of receptivity to viral amplification. Maps of BT and R(0) 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 R(0) 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.
Author Hartley, D. M.; Barker, C. M.; Le Menach, A.; Niu, T.; Gaff, H. D.; Reisen, W. K.
DOI 10.4269/ajtmh.2012.11-0342
Date May
ISSN 0002-9637
Issue 5
Journal The American Journal of Tropical Medicine and Hygiene
Keywords Animals; Bird Diseases/epidemiology/transmission/virology; California/epidemiology; Chickens; Culicidae/virology; Disease Outbreaks; Female; Humans; Insect Vectors/virology; Models, Biological; *Seasons; *Temperature; West Nile Fever/*epidemiology/transmission/veterinary; West Nile virus/growth & development/isolation & purification/*pathogenicity
Notes Hartley, David M Barker, Christopher M Le Menach, Arnaud Niu, Tianchan Gaff, Holly D Reisen, William K eng R01 AI55607/AI/NIAID NIH HHS/ U01EH000418/EH/NCEH CDC HHS/ Comparative Study Research Support, N.I.H., Extramural Research Support, U.S. Gov't, Non-P.H.S. Research Support, U.S. Gov't, P.H.S. 2012/05/05 06:00 Am J Trop Med Hyg. 2012 May;86(5):884-94. doi: 10.4269/ajtmh.2012.11-0342.
Pages 884-894
Title Effects of temperature on emergence and seasonality of West Nile virus in California
Volume 86
Year 2012
Bibliographic identifiers
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_record_number 18004
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