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Where’s the risk? Landscape epidemiology of gastrointestinal parasitism in Alberta beef cattle

Overview of attention for article published in Parasites & Vectors, August 2015
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Title
Where’s the risk? Landscape epidemiology of gastrointestinal parasitism in Alberta beef cattle
Published in
Parasites & Vectors, August 2015
DOI 10.1186/s13071-015-1040-x
Pubmed ID
Authors

Melissa A. Beck, Douglas D. Colwell, Cameron P. Goater, Stefan W. Kienzle

Abstract

Gastrointenstinal nematodes (GIN) present a serious challenge to the health and productivity of grazing stock around the globe. However, the epidemiology of GIN transmission remains poorly understood in northern climates. Combining use of serological diagnostics, GIS mapping technology, and geospatial statistics, we evaluated ecological covariates of spatial and temporal variability in GIN transmission among bovine calves pastured in Alberta, Canada. Sera were collected from 1000 beef calves across Alberta, Canada over three consecutive years (2008-2010) and analyzed for presence of anti-GIN antibodies using the SVANOVIR Ostertagia osteragi-Ab ELISA kit. Using a GIS and Bayesian multivariate spatial statistics, we evaluated the degree to which variation in specific environmental covariates (e.g. moisture, humidity, temperature) was associated with variation in spatial and temporal heterogeneity in exposure to GIN (Nematodirus and other trichostrongyles, primarily Ostertagia and Cooperia). Variation in growing degree days above a base temperature of 5 °C, humidity, air temperature, and accumulated precipitation were found to be significant predictors of broad-scale spatial and temporal variation in serum antibody concentrations. Risk model projections identified that while transmission in cattle from southeastern and northwestern Alberta was relatively low in all years, rate of GIN transmission was generally higher in the central region of Alberta. The spatial variability in risk is attributed to higher average humidity, precipitation and moderate temperatures in the central region of Alberta in comparison with the hot, dry southeastern corner of the province and the cool, dry northwestern corner. Although more targeted sampling is needed to improve model accuracy, our projections represent an important step towards tying treatment recommendations to actual risk of infection.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 47 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Italy 1 2%
Canada 1 2%
Brazil 1 2%
Unknown 44 94%

Demographic breakdown

Readers by professional status Count As %
Researcher 11 23%
Student > Master 10 21%
Student > Ph. D. Student 8 17%
Professor 3 6%
Other 3 6%
Other 6 13%
Unknown 6 13%
Readers by discipline Count As %
Veterinary Science and Veterinary Medicine 14 30%
Agricultural and Biological Sciences 10 21%
Medicine and Dentistry 6 13%
Environmental Science 3 6%
Computer Science 2 4%
Other 3 6%
Unknown 9 19%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 26 August 2015.
All research outputs
#20,290,425
of 22,826,360 outputs
Outputs from Parasites & Vectors
#4,846
of 5,463 outputs
Outputs of similar age
#224,691
of 267,539 outputs
Outputs of similar age from Parasites & Vectors
#108
of 136 outputs
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