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Isolation of La Crosse Virus from Field Collected Aedes Triseriatus Larvae^*

Somsak Pantuwatana, Wayne H. Thompson, Douglas M. Watts, Thomas M. Yuill AND Robert P. Hanson

Two isolates of La Crosse virus were obtained from 515 Aedes triseriatus larvae collected during June and September 1972. The first isolate was from a pool of 43 larvae collected from a basal tree-hole in Iowa County, Wisconsin on 7 June 1972. The second isolate was from a pool of 40 larvae subsequently collected from the same tree-hole on 2 September 1972. A. triseriatus has been repeatedly shown to be infected with La Crosse virus, has transmitted the virus efficiently in the laboratory, and is closely associated with the vertebrate hosts during the period of virus transmission. Isolation of La Crosse virus from larvae of A. triseriatus suggests that this species may possibly serve as an overwintering reservoir for La Crosse virus.

Accepted for publication August 4, 1973.

^* This research was supported by Public Health Service research grant No. CC-00203 from the Center for Disease Control, Atlanta, Georgia, and No. 5-R01-00771-19 and AI-CC-11547-01 from the National Institutes of Health, Bethesda, Maryland.

Address reprint requests to: Dr. Wayne H. Thompson, Department of Preventive Medicine, University of Wisconsin, 465 Henry Mall, Madison, Wisconsin 53706.

On leave of absence from the Faculty of Graduate Studies, Mahidol University, Bangkok, Thailand.

This article has been cited by other articles:

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