Spatial analysis of Neospora caninum distribution in dairy cattle from Sweden

Frössling, Jenny and Nødtvedt, Ane and Lindberg, Ann and Björkman, Camilla (2008) Spatial analysis of Neospora caninum distribution in dairy cattle from Sweden. Geospatial health , 3 (1). pp. 39-45. ISSN 1970-7096

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Abstract

The national herd prevalence and spatial distribution of Neospora caninum infected dairy herds in Sweden were investigated. The study was based on a bulk milk survey comprising samples from 2,978 herds. Test-positive herds were found in all parts of Sweden and the overall prevalence of test-positive herds was 8.3% (95% confidence interval = 7.3-9.3%). The presence of spatial autocorrelation was tested using the Moran’s I test. Possible clusters of test-positive herds were identified by applying the local indicator of spatial association (LISA) test statistic and the spatial scan statistic. Analysis based on data aggregated by postal code areas as well as analysis based on exact coordinates identified significant clusters of high prevalence in the middle parts of Sweden and low prevalence in the south. This was not expected considering the results from other European studies of N. caninum in cattle. However, the findings are supported by the distribution of previously known case herds.

Item Type:	Article
Uncontrolled Keywords:	cluster analysis, prevalence, Neospora caninum, cattle, bulk milk
Subjects:	600 Tecnologia - Scienze applicate > 630 Agricoltura e tecnologie connesse > 636 Allevamento di animali > 636.2 Ruminanti, Camelidi, Bovidae, Bovini > 636.2089696 Parassitosi, malattie causate da funghi (micosi) 900 Storia, Geografia e discipline ausiliarie > 910 Geografia e viaggi > 910.285 Geographic information systems
Depositing User:	biblioteca 7
Date Deposited:	30 Jun 2010 08:14
Last Modified:	07 Mar 2011 09:56
URI:	http://eprints.bice.rm.cnr.it/id/eprint/2821

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