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weather factors in the prediction of western equine encephalitis epidemics in manitoba.cases of western equine encephalitis in horses in 1987 in western usa and manitoba, canada were examined by backward trajectory analysis of winds. culex tarsalis mosquitoes infected with western equine encephalitis virus could have been carried on southerly winds from texas and oklahoma to northern usa and from there to manitoba. the presence of the polar front over north dakota and minnesota at the end of july would have led to the landing of cx. tarsalis in montana and wisconsin and prevented ...19938405163
west nile virus activity--united states, august 25-31, 2004.during august 25-31, a total of 210 cases of human west nile virus (wnv) illness were reported from 14 states (arizona, california, florida, illinois, indiana, kansas, maryland, minnesota, montana, nevada, new mexico, north dakota, oklahoma, and pennsylvania).200415343148
west nile virus activity--united states, september 22-28, 2004.during september 22-28, a total of 180 cases of human west nile virus (wnv) illness were reported in the district of columbia (dc) and 24 states (alabama, arizona, california, georgia, illinois, iowa, kansas, kentucky, louisiana, maryland, michigan, minnesota, mississippi, missouri, montana, nebraska, nevada, new mexico, ohio, pennsylvania, texas, utah, wisconsin, and wyoming).200415457147
trajectory analysis of winds and vesicular stomatitis in north america, 1982-5.outbreaks of vesicular stomatitis, serotype new jersey, during epidemics in the united states and northern mexico, 1982-5, were examined by backward trajectories of winds to investigate spread and possible sources. the outbreaks selected for analysis did not involve introduction of disease by infected animals. the findings indicate that wind could have been responsible for carrying infection from northern mexico to arizona and new mexico and thence to colorado and utah and on to wyoming, idaho a ...19902157606
observations on the life cycle and prevalence of eimeria leuckarti in horses in montana.of 22 foals from 4 localities in southwestern montana, 59% were found to be infected with eimeria leuckarti. oocysts collected from feces of 4 positive horses were sporulated and subsequently administered to a 5- to 6-month-old foal. the prepatent period was 31 days and the patent period was between 5 and 10 days.1977931153
rabies surveillance in the united states during 1989.in 1989, 4,808 cases of rabies in animals other than human beings were reported to the centers for disease control, 1.8% more (4,724 to 4,808) than in 1988. eighty-eight percent (4,224/4,808) of those affected were wild animals and 12% (584/4,808) were domestic animals. cases were reported from 49 states, the district of columbia, and puerto rico; hawaii remained rabies-free. skunks (1,657) continued to be the most commonly reported rabid wild animal. for the second consecutive year, more cats ( ...19902276949
prevalence of neospora hughesi and sarcocystis neurona antibodies in horses from various geographical locations.parasite-specific antibody responses to neospora antigens were detected using the immunofluorescent antibody test (ifat) and immunoblot analysis in select equine populations. for comparison, a naturally infected neospora hughesi horse and an experimentally inoculated neospora caninum horse were used. in addition, all samples were tested for antibodies to sarcocystis neurona by immunoblot analysis. a total of 208 samples was evaluated. the equine populations were derived from five distinct geogra ...200111223207
west nile virus activity--united states, october 20-26, 2004.during october 20-26, a total of 80 cases of human west nile virus (wnv) illness were reported from 16 states (arizona, california, florida, iowa, kentucky, louisiana, michigan, mississippi, missouri, montana, nebraska, new york, ohio, south dakota, texas, and utah).200415514584
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