Abstract
The Companion Animal Parasite Council hosted a meeting to identify quantifiable factors that can influence the prevalence of tick-borne disease agents among dogs in North America. This report summarizes the approach used and the factors identified for further analysis with mathematical models of canine exposure to tick-borne pathogens.
Highlights
Dogs in the United States (USA) are hosts to a diverse range of ixodid ticks and can become infected with many of the pathogens transmitted by these vectors
A previous national survey, spanning 2001–2007, reported results from 982,336 diagnostic tests for canine exposure to B. burgdorferi and Ehrlichia spp., and 479,640 tests for canine antibodies to Anaplasma spp., with 5.1%, 0.6% and 4.7% of these samples testing seropositive for B. burgdorferi, Ehrlichia and Anaplasma, respectively [3]
The overall objective of this Companion Animal Parasite Council (CAPC)-sponsored workshop was to identify factors that are likely to influence the seroprevalence of canine exposure to tick-borne disease agents in the USA, focusing on the factors and the pathogens for which sufficient data are available, so that these factors could be evaluated for incorporation in mathematical models designed to monitor and to predict spatial and temporal seroprevalence patterns
Summary
Dogs in the United States (USA) are hosts to a diverse range of ixodid ticks and can become infected with many of the pathogens transmitted by these vectors. The overall objective of this CAPC-sponsored workshop was to identify factors that are likely to influence the seroprevalence of canine exposure to tick-borne disease agents in the USA, focusing on the factors and the pathogens for which sufficient data are available, so that these factors could be evaluated for incorporation in mathematical models designed to monitor and to predict spatial and temporal seroprevalence patterns. Vector factors Distribution Abundance % Infected Canine contact Local phenology Tolerance to temperature and humidity Activity Focus on adults as primary vector to dogs Host seeking behavior Host contact Feeding preferences and opportunities Deer population drives tick abundance Small mammal population drives infection prevalence Lack of lizards Diversity/dilution effect Tick encounters Questing behavior versus relative humidity Peridomestic encounters – access to areas Urbanization/Rate of development Infection status (decreased survival versus increased cold tolerance). Average household income Human population Large-scale economic factors Recreation Hunting Parks (rural and urban) Pets per household
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