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California encephalitis (CE) virus (snowshoe hare subtype) was isolated from 1 of 38 pools comprising 970 unengorged female Aedes canadensis mosquitoes and from 3 of 152 pools containing 5,676 A. communis mosquitoes which were collected in the Yukon Territory, Canada between latitudes 61 and 66 degrees N during June and July 1974. During four summers 1971 through 1974, this virus was recovered from 26 of 648 pools derived from 30,686 mosquitoes of 4 species. Isolation of CE virus from 1 of 109 pools of Aedes sp. larvae collected during May 1974 suggests maintenance of this virus over winter by transovarial transfer. Infectivity has been maintained in Culiseta inornata mosquitoes which were held continuously at 32 degrees F for 138 days. Neutralizing antibodies to CE virus were detected in 705 of 4,913 (14%) mammals collected during summers 1971 through 1974, including 430 of 1,076 (40%) snowshoe hares (Lepus americanus), 266 of 3,610 (7%) ground squirrels (Citellus undulatus) and 9 of 227 (4%) red squirrels (Tamiasciurus hudsonicus).
D M McLean, and
S K Bergman, and
A P Gould, and
P N Grass, and
M A Miller, and
E E Spratt
April 1972,
American journal of epidemiology,
D M McLean, and
S K Bergman, and
A P Gould, and
P N Grass, and
M A Miller, and
E E Spratt
June 1973,
The Journal of hygiene,
D M McLean, and
S K Bergman, and
A P Gould, and
P N Grass, and
M A Miller, and
E E Spratt
January 1977,
Canadian journal of public health = Revue canadienne de sante publique,
D M McLean, and
S K Bergman, and
A P Gould, and
P N Grass, and
M A Miller, and
E E Spratt
August 1976,
Canadian journal of microbiology,
D M McLean, and
S K Bergman, and
A P Gould, and
P N Grass, and
M A Miller, and
E E Spratt
November 1953,
Lancet (London, England),
D M McLean, and
S K Bergman, and
A P Gould, and
P N Grass, and
M A Miller, and
E E Spratt
June 1979,
Canadian Medical Association journal,
D M McLean, and
S K Bergman, and
A P Gould, and
P N Grass, and
M A Miller, and
E E Spratt
April 1990,
Canada diseases weekly report = Rapport hebdomadaire des maladies au Canada,
D M McLean, and
S K Bergman, and
A P Gould, and
P N Grass, and
M A Miller, and
E E Spratt
January 1976,
The American journal of tropical medicine and hygiene,
D M McLean, and
S K Bergman, and
A P Gould, and
P N Grass, and
M A Miller, and
E E Spratt
January 1987,
Journal of the American Veterinary Medical Association,
D M McLean, and
S K Bergman, and
A P Gould, and
P N Grass, and
M A Miller, and
E E Spratt
April 1973,
Health laboratory science,
