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Impact of climate on western equine encephalitis in Manitoba, Minnesota and North Dakota, 1980–1983

Published online by Cambridge University Press:  15 May 2009

R. F. Sellers
Affiliation:
Agriculture Canada, Health of Animals Laboratory Division, Halldon House, 2255 Carling Avenue, Ottawa, Ontario K1A 0Y9
A. R. Maarouf
Affiliation:
Environment Canada, Canadian Climate Centre, 4905 Dufferin Street, Downsview, Ontario M3H 5T4
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Summary

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Information was collected on confirmed outbreaks of western equine encephalitis (WEE) in North America east of the Rockies for 1981 and 1983 (epidemic years) and 1980 and 1982 (non-epidemic years). The initial pattern of outbreaks in Manitoba, Minnesota and North Dakota was determined for each year. Backward (and in some instances forward) wind trajectories were computed for each day 4–15 days (incubation period) before the initial outbreaks of WEE in a given area of province or state.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1988

References

REFERENCES

Anon (1987). Western equine encephalitis – United States and Canada. 1987. Morbidity and Mortality Weekly Report 36, 655659.Google Scholar
Artsob, H. & Spence, L. (1979) Arboviruses in Canada. In Arctic and Tropical Arboviruses (ed. Kurstak, E.), pp. 3965. New York: Academic Press.CrossRefGoogle Scholar
Brust, R. A. (1982) Brief historical review of western equine encephalitis. In Western equine Encephalitis in Manitoba (ed. Sekla, L.), pp. 911. Winnipeg: Manitoba Health Commission.Google Scholar
Brust, R. A. (1982) Population dynamics of Culex tarsalis Coquillett in Manitoba. In Western Equine Encephalitis in Manitoba (ed. Sekla, L.), pp. 2130. Winnipeg: Manitoba Health Commission.Google Scholar
Calisher, C. H., Emerson, J. K., Muth, D. J., Lazuick, J. S. & Monath, T. P. (1983). Serodiagnosis of western equine encephalitis virus infections: relationship of antibody titer and test to observed onset of clinical illness. Journal of the American Veterinary Medical Association 183, 438440.Google ScholarPubMed
Chamberlain, R. W. (1980) Edidemiology of arthropod-borne togaviruses: the role of arthropods as hosts and vestors and of vertebrate hosts in natural transmission cycles. In The Togariruses (ed. Schlesinger, W.). pp. 175227. New York: Academic Press.CrossRefGoogle Scholar
Day, J. F. & Edman, J. D. (1984). Mosquito enforcement on normally defensive hosts depends on host activity patterns. Journal of Medical Entomology 21, 732740.CrossRefGoogle Scholar
Eads, R. B. (1965). Biological notes on Culex tarsalis in the Lower Rio Grande Valley of Texas. Mosquito Neus 25, 6163.Google Scholar
Edman, J. D. & Downe, A. E. R. (1964). Host-blood sources and multiple-feeding habits of mosquitoes in Kansas. Mosquito News 24, 154160.Google Scholar
Eklund, C. M. (1946). Human encephalitis of the western equine type in Minnesota in 1941; clinical and epidemiological study of serologically positive cases. American Journal of Hygiene 43. 171193.Google ScholarPubMed
Grimstad, P. R. (1983). Mosquitoes and the incidence of encephalitis. Advances in Virus Research 28, 357438.CrossRefGoogle ScholarPubMed
Hammon, W., McD.., Reeves W. C. & Galindo, B. S. (1945). Epizoology of western equine encephalomyelitis: eastern Nebraska field survey of 1943 with isolation of the virus from mosquitoes. American Journal of Veterinary Research 6, 145148.Google Scholar
Harmston, F. C., Schultz, G. R., Eads, R. B. & Menzies, G. C. (1956). Mosquitoes and encephalitis in the irrigated High Plains of Texas. Public Health Reports 71, 759766.CrossRefGoogle ScholarPubMed
Hayes, C. G. & Wallis, R. C. (1977). Ecology of western equine encephalomyelitis viruses in the eastern United States. Advances in Virus Research 21, 3783.CrossRefGoogle ScholarPubMed
Hayes, R. O.., Tempelis, C. H.., Hess, A. D. & Reeves, W. C. (1973). Mosquito host preference studies in Hale County. Texas. American Journal of Tropical Medicine and Hygiene 22, 270277.CrossRefGoogle ScholarPubMed
Henderson, L. P.., Brust, R. A. & Wong, F. C. (1979). Biological transmission of western encephalomyelitis virus by Culex tarsalis Coquillett. Mosquito News 39, 385390.Google Scholar
Hess, A. D. & Hayes, R. O. (1967). Seasonal dynamics of western encephalitis virus. American Journal of the Medical Sciences 253, 333348.CrossRefGoogle ScholarPubMed
Holden, P.., Francy, D. B., Mitchell, C. J., Hayes, R. O.., Lazuick, J. S. & Hughes, T. B. (1973). House sparrows, Passer domesticus L., as hosts of arboviruses in Hale County, Texas. II. Laboratory studies with western equine encephalitis virus. American Journal of Tropical Medicine and Hygiene. 22. 254262.CrossRefGoogle ScholarPubMed
Hopkins, C. C., Hollinger, F. B., Johnson, R. F., Dewlett, H. J., Newhouse, V. F. & Chamberlain, R. W. (1975). The epidemiology of St. Louis encephalitis in Dallas. Texas, 1966. American Journal of Epidemiology 102, 115.CrossRefGoogle ScholarPubMed
Hudson, J. E. & Edman, J. D. (1978). Dispersal of blood-fed Culiseta inornata and Culiseta alaskaensis at Edmonton, Alberta. Mosquito News 38, 8789.Google Scholar
Johnson, C. G. (1969). Migration and Dispersal of Insects by Flight. London: Methuen.Google Scholar
Lee, P. E. & Robinson, A. G. (1958). Studies on the six spotted leafhopper, Macrosteles fascifrons (Stal). and aster yellows in Manitoba. Canadian Journal of Plant Science 38, 320327.CrossRefGoogle Scholar
Leung, M. K.. Burton, A.. Iversen, J. & McLintock, J. (1975). Natural infections of Richardson's ground squirrels with western equine encephalomyelitis virus, Saskatchewan, Canada. 1964–1973. Canadian Journal of Microbiology 21. 954958.CrossRefGoogle ScholarPubMed
Leung, M. K.., Iversen, J.., McLintock, J. & Saunders, J. R. (1976). Subcutaneous exposure of the Richardson's ground squirrel (Spermophilus richardsonii Sabine) to western equine encephalomyelitis virus. Journal of Wildlife Diseases 12, 237246.CrossRefGoogle ScholarPubMed
Lillie, L., Wong, F. C. & Drysdale, R. A. (1976). IV. Equine epizootic of western encephalomyelitis in Manitoba – 1975. Canadian Journal of Public Health 67, Supplement 1, 2127.Google Scholar
McLintock, J., Burton, A. N. & Rempel, J. G. (1967). Interepidemic hosts of western encephalitis virus in Saskatchewan. Proceedings of 54th Annual Meeting, New Jersey Mosquito Extermination Association, pp. 97104.Google Scholar
McLintock, J., Burton, A. N., McKiel, J. A., Hall, R. R. & Rempel, J. G. (1970). Known mosquito hosts of western encephalitis virus in Saskatchewan. Journal of Medical Entomology 7. 446454.CrossRefGoogle ScholarPubMed
Meyer, R. P., Washino, R. K. & Mckenzie, T. L. (1982). Studies on the biology of Culiseta inornata (Diptera:Culicidae) in three regions of Central California USA. Journal of Medical Entomology 19. 558568.CrossRefGoogle Scholar
Mitchell, C. J., Francy, D. B. & Monath, T. P. (1980) Arthropod vectors. In St. Louis Encephalitis (ed. Monath, T. P.), pp. 313379. Washington: American Public Health Association.Google Scholar
Monath, T. P. (1980) Epidemiology. In St Louis Encephalitis (ed. Monath, T. P.), pp. 239312. Washington: American Public Health Association.Google Scholar
Neufeld, J. (1982). WEE epizootic in Manitoba. 32nd Conference of Canadian Workers in Animal Pathology pp. 153161.Google Scholar
Neufeld, J. (1984). Western equine encephalitis in Manitoba 1975–1983. 34th Canadian Animal Pathology Conference, abstract 21.Google Scholar
Neufeld, J. L. & Nayar, G. P. S. (1982) Western equinc eneephalitis in Manitoba - equine cases, 1975–1981. In Western Equine Enecephalitis in Manitoba (ed. Sekla, L.), pp. 6279. Winnipeg: Manitoba Health Commission.Google Scholar
Nichiporick, W. (1965). The aerial migration of the six-spotted leafhopper and the spread of the virus disease aster yellows. International Journal of Biometeorology 9, 219227.CrossRefGoogle Scholar
North Dakota State Department of Health (1981). North Dakota encephalitis surveillance program. Division of Environmental Sanitation, pp. 183. Bismarck: State Department of Health.Google Scholar
Olson, M. P., Oikawa, K. K. & Macafee, A. W. (1978). A trajectory model applied to the long-range transport of air pollutants. Atmospheric Environment Service, Long Range Transport of Air Pollutants 78–4, pp. 24.Google Scholar
Pearson, J. E. (1983). In Proceedings of Annual Meeting of US Animal Health Association 87;43.Google Scholar
Pearson, J. E. (1984). In Proceedings of Annual Meeting of US Animal Health Association 88. 372373.Google Scholar
Potter, M. E., Currier, R. W., Pearson, J. E., Harris, J. C. & Parker, R. L. (1977). Western equine encephalitis in horses in the Northern Red River Valley, 1975. Journal of the American Veterinary Medical Association 170, 13961399.Google ScholarPubMed
Raddatz, R. L. (1982) Forests of Culex tarsalis populations in winnipeg, manitoba. In Western Equine Encephalitis in Manitoba (ed. Sekla, L.), pp. 3649. Winnipeg: Manitoba Health Commission.Google Scholar
Raddatz, R. L. (1986). A biometeorological model of an encephalitis vector. Boundary Layer Meteorology 34, 185199.CrossRefGoogle Scholar
Rainey, R. C. (1983). Supplementary comment on Thresh (1983). Philosophical Transactions of the Royal Society of London B 302, 526527.Google Scholar
Rosenberg, L. J. & Magor, J. I. (1983). Flight duration of the brown planthopper. Nilaparvata lugens (Homoptera: Delphacidae). Ecological Entomology 8, 341350.CrossRefGoogle Scholar
Schaefer, G. W. (1976). Radar observations of insect flight. Symposium of the Royal Entomological Society of London 7, 157197.Google Scholar
Sekla, L. (1982). Western Equine Encephalitis in Manitoba. Winnipeg: Manitoba Health Commission.Google Scholar
Sekla, L. & Eadie, J. A. (1984). Manitoba arbovirus surveillance 1983. Canada Diseases Weekly Report 10, 9495.Google Scholar
Sekla, L. & Stackiw, W. (1982) Arbovirus isolations from mosquitoes in Manitoba: value in decision making. In Western Equine Encephalitis in manitoba (ed. Sekla, L.). pp. 5060. Winnipeg: Manitoba Health Commission.Google Scholar
Sellers, R. F. (1980). Weather, host and vector – their interplay in the spread of insect-borne animal virus diseases. Journal of Hygiene 85, 65102.CrossRefGoogle ScholarPubMed
Shemanchuk, J. A., Downe, A. E. R. & Burgess, L. (1963). Hosts of mosquitoes (Diptera: Culicidae) from the irrigated areas of Alberta. Mosquito News 23. 336341.Google Scholar
Sponseller, M. L., Binn, L. N., Wooding, W. L. & Yager, R. H. (1966). Field strains of western encephalitis in ponies, virologic, clinical and pathogenic observations. American Journal of Veterinary Research 27, 15911598.Google Scholar
Sudia, W. D., Newhouse, V. F., Beadle, L. D., Miller, D. L., Johnson, J. G. Jr., Young, R., Calisher, C. H. & Maness, K. (1975). Epidemic Venezuelan equine encephalitis in North America in 1971: vector studies. American Journal of Epidemiology 101, 1735.CrossRefGoogle ScholarPubMed
Tempelis, C. H. (1975). Host-feeding patterns of mosquitoes, with a view of advances in analysis of blood meals by serology. Journal of Medical Entomology 11, 635653.CrossRefGoogle Scholar
Tempelis, C. H., Francy, D. B., Hayes, R. O. & Lofy, M. F. (1967). Variations in feeding patterns of seven culieine mosquitoes on vertebrate hosts in Weld and Larimer Counties, Colorado. American Journal of Tropical Medicine and Hygiene 16, 111119.CrossRefGoogle ScholarPubMed
Thresh, J. M. (1983). The long-range dispersal of plant viruses by arthropod vectors. Philosophical Transactions of the Royal Society of London B 302, 497528.Google Scholar
Trent, D. W. & Grant, J. A. (1980). A comparison of New World Alphaviruses in the western equine encephalomyelitis complex by immunochemical and oligonucleotide fingerprint techniques. Journal of General Virology 47. 261282.CrossRefGoogle ScholarPubMed
Walton, T. E. (1981) Venezuelan, eastern and western encephalomyelitis. In Virus Diseases of Food Animals (ed. Gibbs, E. P. J.), pp. 587625. London: Academic Press.Google Scholar
Westdal, P. H., Barrett, C. F. & Richardson, H. P. (1961). The six-spotted leafhopper, Macrosteles fascifrons (Stal.), and aster yellows in Manitoba. Canadian Journal of Plant Science 41. 320331.CrossRefGoogle Scholar
Williams, K. H., Hollinger, F. B., Metzger, W. R., Hopkins, C. C. & Chamberlain, R. W. (1975). The epidemiology of St. Louis encephalitis in Corpus Christi, Texas, 1966. American Journal of Epidemiology 102, 1624.CrossRefGoogle Scholar
Wong, F. C., Lillie, L. E. & Drysdale, R. A. (1976). III. Sentinel flock monitoring procedures for western encephalomyelitis in Manitoba, 1975. Canadian Journal of Public Health 67, Supplement 1. 1520.Google Scholar
Wong, F. C. & Neufeld, J. (1982) Sentinel flock monitoring procedure for western equine encephalomyelitis in Manitoba. 1976–1981. In Western Equine Encephalitis in Manitoba (ed. Sekla, L.). pp. 8697. Winnipeg: Manitoba Health Commission.Google Scholar