Detection of major climatic and environmental predictors of liver fluke exposure risk in Ireland using spatial cluster analysis

Veterinary Parasitology
Nikolaos Selemetas, Theo de Waal

Abstract

Fasciolosis caused by Fasciola hepatica (liver fluke) can cause significant economic and production losses in dairy cow farms. The aim of the current study was to identify important weather and environmental predictors of the exposure risk to liver fluke by detecting clusters of fasciolosis in Ireland. During autumn 2012, bulk-tank milk samples from 4365 dairy farms were collected throughout Ireland. Using an in-house antibody-detection ELISA, the analysis of BTM samples showed that 83% (n=3602) of dairy farms had been exposed to liver fluke. The Getis-Ord Gi* statistic identified 74 high-risk and 130 low-risk significant (P<0.01) clusters of fasciolosis. The low-risk clusters were mostly located in the southern regions of Ireland, whereas the high-risk clusters were mainly situated in the western part. Several climatic variables (monthly and seasonal mean rainfall and temperatures, total wet days and rain days) and environmental datasets (soil types, enhanced vegetation index and normalised difference vegetation index) were used to investigate dissimilarities in the exposure to liver fluke between clusters. Rainfall, total wet days and rain days, and soil type were the significant classes of climatic and environmental variable...Continue Reading

References

Jun 17, 2006·Preventive Veterinary Medicine·T M MurphyD J O'Brien
Apr 21, 2009·Veterinary Parasitology·Santiago Mas-ComaMaria Dolores Bargues
May 15, 2009·Geospatial Health·Laura RinaldiGiuseppe Cringoli
Nov 24, 2011·Geospatial Health·Jennifer WeisentAgricola Odoi
Dec 24, 2011·Journal of Dairy Science·D LäppleM O'Donovan
Jun 5, 2013·Geospatial Health·Charles E FritzScott Lear
Jun 4, 2014·Geospatial Health·Rebeca RamisGonzalo López-Abente
Aug 16, 2014·The Veterinary Record·N SelemetasT de Waal
Apr 1, 2015·Geospatial Health·Nikolaos SelemetasTheo de Waal

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Citations

Apr 20, 2019·Genetics, Selection, Evolution : GSE·Alan J TwomeyDeirdre C Purfield

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