1921
Volume 24, Issue 4
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645
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Abstract

Abstract

California encephalitis (CE) virus (snowshoe hare subtype) was isolated from 1 of 38 pools comprising 970 unengorged female mosquitoes and from 3 of 152 pools containing 5,676 mosquitoes which were collected in the Yukon Territory, Canada between latitudes 61 and 66° 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 sp. larvae collected during May 1974 suggests maintenance of this virus over winter by transovarial transfer. Infectivity has been maintained in mosquitoes which were held continuously at 32° 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 (), 266 of 3,610 (7%) ground squirrels () and 9 of 227 (4%) red squirrels ().

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/content/journals/10.4269/ajtmh.1975.24.676
1975-07-01
2017-11-21
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http://instance.metastore.ingenta.com/content/journals/10.4269/ajtmh.1975.24.676
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  • Accepted : 23 Nov 1974

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