reference : Limited interdecadal variation in mosquito (Diptera: Culicidae) and avian host competence for Western equine encephalomyelitis virus (Togaviridae: Alphavirus)

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/report/usgcrp-climate-human-health-assessment-2016/chapter/vectorborne-diseases/reference/45cf633e-2462-4d2a-9c0d-2bbdac4e5742
Bibliographic fields
reftype Journal Article
Abstract Historically, western equine encephalomyelitis virus (WEEV) caused large equine and human epidemics in the Americas from Canada into Argentina. Despite recent enhanced surveillance for West Nile virus, there have been few reports of equine or human cases and little documented enzootic activity of WEEV. During the past three years, WEEV has been active again in California, but without human or equine cases. In the current study, we compared host and vector competence of representative WEEV isolates made during each decade over the past 60 years using white-crowned sparrows, house sparrows, and Culex tarsalis Coquillett as representative hosts. Results indicated limited time-related change in virulence among WEEV strains in birds and little difference in vector competence in Cx. tarsalis. Although temporal and spatial genetic changes have been documented, these seem to present limited phenotypic change in host competence and cannot explain the absence of equine and human cases.
Author Reisen, W. K.; Fang, Y.; Brault, A. C.
Date Apr
ISSN 0002-9637
Issue 4
Journal The American Journal of Tropical Medicine and Hygiene
Keywords Animals; Bird Diseases/epidemiology/mortality/virology; Birds/*virology; California/epidemiology; Cercopithecus aethiops; Culex/*virology; Culicidae/*virology; Encephalitis Virus, Western Equine/isolation & purification/*pathogenicity; Encephalomyelitis, Equine/epidemiology; Female; Haplorhini; Horse Diseases/epidemiology/virology; Horses; Mice; Sparrows; Vero Cells; Viremia/epidemiology/veterinary
Notes Reisen, William K Fang, Ying Brault, Aaron C eng NIAID RO1-39483/PHS HHS/ R01-AI47855/AI/NIAID NIH HHS/ R01-AI55607/AI/NIAID NIH HHS/ Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't 2008/04/04 09:00 Am J Trop Med Hyg. 2008 Apr;78(4):681-6.
Pages 681-686
Title Limited interdecadal variation in mosquito (Diptera: Culicidae) and avian host competence for Western equine encephalomyelitis virus (Togaviridae: Alphavirus)
URL http://www.ajtmh.org/content/78/4/681.full.pdf+html
Volume 78
Year 2008
Bibliographic identifiers
.reference_type 0
_record_number 18027
_uuid 45cf633e-2462-4d2a-9c0d-2bbdac4e5742