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Spatial and Temporal Epidemiology of Dirofilaria immitis Infection in dogs in Relation to Weather Parameters

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dc.contributor.advisor Berke, Olaf
dc.contributor.author Forrest, Russell Othmer
dc.date.accessioned 2020-09-15T20:21:58Z
dc.date.available 2020-09-15T20:21:58Z
dc.date.copyright 2020-09
dc.date.created 2020-09-03
dc.date.issued 2020-09-14
dc.identifier.uri https://hdl.handle.net/10214/21271
dc.description.abstract Heartworm development units (HDU) are commonly used as the main predictor for the prevalence of heartworm infection in dogs. The HDU is based on scientific knowledge regarding the temperature conditions necessary for the larval development of the parasite Dirofilaria immitis and its vector species activity range. However, HDUs are not readily available, and other predictors for D. immitis infection may be better at describing its prevalence in the dog population. Monthly heartworm antigen test results for dogs in Ontario from 2014 to 2019 were subjected to time series linear regression. Further, annual heartworm antigen test results for dogs in Canada and the United States at the provincial/state level for the year 2018 were analysed using Generalized Linear Mixed Models. Average monthly and annual ambient temperature was shown to be a better predictor for the prevalence of heartworm infection in dogs than monthly and annual HDUs using temporal and spatial models. en_US
dc.description.sponsorship Ontario Veterinary College en_US
dc.language.iso en en_US
dc.publisher University of Guelph en_US
dc.rights Attribution-NonCommercial-ShareAlike 4.0 International *
dc.rights.uri http://creativecommons.org/licenses/by-nc-sa/4.0/ *
dc.subject Heartworm en_US
dc.subject Dirofilaria immitis en_US
dc.subject Prevalence en_US
dc.subject Ontario en_US
dc.subject Canada en_US
dc.subject Epidemiology en_US
dc.subject Time series en_US
dc.subject Weather en_US
dc.subject United States en_US
dc.title Spatial and Temporal Epidemiology of Dirofilaria immitis Infection in dogs in Relation to Weather Parameters en_US
dc.type Thesis en_US
dc.degree.programme Population Medicine en_US
dc.degree.name Master of Science en_US
dc.degree.department Department of Population Medicine en_US
dc.degree.grantor University of Guelph en_US


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