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- Title
ENTOMOLOGIC STUDIES AFTER A ST. LOUIS ENCEPHALITIS EPIDEMIC IN GRAND JUNCTION, COLORADO.
- Authors
TSAI, T. F.; SMITH, G. C.; NDUKWU, M.; JAKOB, W. L.; HAPP, C. M.; KIRK, L. J.; FRANCY, D. B.; LAMPERT, K. J.
- Abstract
In 1986, after a St. Louis encephalitis epidemic in Grand Junction, Colorado, in 1985, vector mosquitoes in the city were surveyed to correlate their bionomics and infection rates with the occurrence of human disease. No human cases were reported, but mosquito surveillance disclosed St. Louis encephalitis virus in and Mosquitoes were collected with gravid traps designed to attract and with Centers for Disease Control light traps. was the predominant vector mosquito collected and was captured chiefly in gravid traps. The population emerged and expanded approximately one month earlier than did the population. Consequently, was the predominant vector species after August. Infection rates throughout the surveillance period (June to September) were severalfold higher in than in however, in late summer, diminished numbers of and a persistent population of resulted in relatively larger numbers of infected . Thus, the participation of Cx. p. as a St. Louis encephalitis vector would have been underestimated in previous studies employing light traps alone. These studies provide further evidence that -associated urban St. Louis encephalitis and rural Cx. -associated St. Louis encephalitis cycles may coexist in the West.
- Publication
American Journal of Epidemiology, 1988, Vol 128, Issue 2, p285
- ISSN
0002-9262
- Publication type
Article
- DOI
10.1093/oxfordjournals.aje.a114969