Retrospective and spatial analysis tools for integrated surveillance of cystic echinococcosis and bovine cysticercosis in hypo-endemic areas

  • Rudi Cassini | rudi.cassini@unipd.it Department of Animal Medicine, Production and Health, University of Padova, Legnaro, Italy.
  • Paolo Mulatti Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Italy.
  • Claudia Zanardello Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Italy.
  • Giulia Simonato Department of Animal Medicine, Production and Health, University of Padova, Legnaro, Italy.
  • Manuela Signorini Department of Animal Medicine, Production and Health, University of Padova, Legnaro, Italy.
  • Stefania Cazzin Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Italy.
  • Pier Giorgio Tambalo Local Health Unit, Caprino Veronese, Italy.
  • Mario Cobianchi Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Italy.
  • Mario Pietrobelli Department of Animal Medicine, Production and Health, University of Padova, Legnaro, Italy.
  • Gioia Capelli Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Italy.

Abstract

Cystic echinococcosis (CE) and bovine cysticercosis (BC) are two important parasitic zoonoses, whose prevalence varies among European countries. Few data are available on prevalence and geographic distribution of these two diseases in Veneto region in north-eastern Italy, where they are generally perceived as minor public health problems. Available data from regional farms on cattle positive to CE and BC and slaughtered in the period 2006-2010 were analysed by spatial scan statistic using a Bernoulli probability model. Out of 576 bovines testing positive to CE, 467 were found to be autochthonous cases. Three significant CE clusters were identified, the most likely one (P <0.001) located in the eastern part of the Veneto region. As for BC, two clusters were identified from 148 animals testing positive, 91 of which were autochthonous. An epidemiological survey was conducted and the most likely CE cluster was centred, collecting faecal samples from 28 dogs living in the farms of the area. Out of five animals (all shepherd dogs) found positive for taenid eggs by copromicroscopy, one was confirmed positive for Echinococcus granulosus by means of polymerase chain reaction. The study demonstrates the usefulness of integration of slaughterhouse data and geographical coordinates of farms involved for effective surveillance of CE and BC. The reliability of the spatial analysis in the identification of clusters of EC cases was confirmed by the finding of one dog positive for E. granulosus.

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Published
2014-05-01
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Original Articles
Keywords:
bovine cysticercosis, cystic echinococcosis, integrated surveillance, retrospective analysis, spatial analysis, Italy.
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How to Cite
Cassini, R., Mulatti, P., Zanardello, C., Simonato, G., Signorini, M., Cazzin, S., Tambalo, P. G., Cobianchi, M., Pietrobelli, M., & Capelli, G. (2014). Retrospective and spatial analysis tools for integrated surveillance of cystic echinococcosis and bovine cysticercosis in hypo-endemic areas. Geospatial Health, 8(2), 509-515. https://doi.org/10.4081/gh.2014.40

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