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California encephalitis virus endemicity in the Yukon Territory, 1972

Published online by Cambridge University Press:  15 May 2009

D. M. McLean ,
Alison M. Clarke ,
E. J. Goddard ,
A. S. Manes ,
C. A. Montalbetti  and
R. E. Pearson
D. M. McLean
Affiliation:
Division of Medical Microbiology, University of British Columbia, Vancouver 8, B.C., Canada
Alison M. Clarke
Affiliation:
Division of Medical Microbiology, University of British Columbia, Vancouver 8, B.C., Canada
E. J. Goddard
Affiliation:
Division of Medical Microbiology, University of British Columbia, Vancouver 8, B.C., Canada
A. S. Manes
Affiliation:
Division of Medical Microbiology, University of British Columbia, Vancouver 8, B.C., Canada
C. A. Montalbetti
Affiliation:
Division of Medical Microbiology, University of British Columbia, Vancouver 8, B.C., Canada
R. E. Pearson
Affiliation:
Division of Medical Microbiology, University of British Columbia, Vancouver 8, B.C., Canada
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Sera from 218 of 1574 (14%) small mammals collected in the Yukon Territory between 14 May and 13 August 1972 neutralized a Yukon strain of California encephalitis virus (snowshoe-hare subtype). These included 133 of 319 (42%) snowshoe hares (Lepus americanus), 84 of 1243 (7%) ground squirrels (Citellus undulatus) and 1 of 12 (8%) tree squirrels (Tamiasciurus hudsonicus). California encephalitis virus (snow-shoe hare subtype) was isolated from four pools of unengorged Aedes communis mosquitoes collected near Whitehorse (61° N., 135° W.) and on one occasion each from pools of the same species collected at Hunker Creek (64° N., 138° W.) and at mile 125, Dempster Highway (66° N., 138° W.) during July 1972. Replication of a Yukon strain of California encephalitis virus was observed in wild-caught Culiseta inornata and Aedes canadensis mosquitoes after intrathoracic injection and holding at temperatures of 80°, 50° and 40° F.

Type
Research Article
Information
Journal of Hygiene , Volume 71 , Issue 2 , June 1973 , pp. 391 - 402
Copyright
Copyright © Cambridge University Press 1973

References

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