Multivariate spatially-structured variability of ovine helminth infections

Biggeri, Annibale and Catelan, Dolores and Dreassi, Emanuela and Rinaldi, Laura and Musella, Vincenzo and Veneziano, Vincenzo and Cringoli, Giuseppe (2007) Multivariate spatially-structured variability of ovine helminth infections. Geospatial health , 2 (1). pp. 97-104. ISSN 1970-7096

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Abstract

A cross-sectional survey was carried out on 2004-2005 in the Campania region, southern Italy, to study the multivariate geographical distribution of four different sheep helminths, i.e. Fasciola hepatica (liver fluke), Calicophoron (Paramphistomum) daubneyi (rumen fluke), Dicrocoelium dendriticum (lancet fluke), and the gastrointestinal strongyle Haemonchus contortus. A series of multivariate Bayesian hierarchical models based on square root transformation of faecal egg counts were performed. The results were consistent with theoretical knowledge of the biology and epidemiology of the four studied helminths. In particular, the impact of common intermediate hosts (F. hepatica and C. daubneyi share the same intermediate host species) was quantified and evidence of previously unknown ecological components was given. D. dendriticum was correlated to F. hepatica and H. contortus was found not to be spatially associated with the previously mentioned helminths

Item Type:	Article
Uncontrolled Keywords:	disease mapping, shared component models, hierarchical Bayesian model, veterinary epidemiology, helminths
Subjects:	600 Tecnologia - Scienze applicate > 610 Medicina e salute (Classificare qui la tecnologia dei servizi medici) > 614 Medicina legale; incidenza delle malattie; Medicina preventiva pubblica > 614.4 Incidenza delle malattie e misure pubblica per prevenirle (classificare qui l'Epidemiologia, l'Epidemiologia clinica) > 614.42 Incidenza delle malattie, e misure pubbliche per prevenirle. Incidenza (classificare qui la prevalenza; la Geografia medica; l'Epidemiologia spaziale; i rilevamenti sanitari) 600 Tecnologia - Scienze applicate > 630 Agricoltura e tecnologie connesse > 636 Allevamento di animali > 636.089 Scienze veterinarie, Medicina veterinaria
Depositing User:	Users 66 not found.
Date Deposited:	12 Jul 2010 12:29
Last Modified:	12 Jul 2010 12:29
URI:	http://eprints.bice.rm.cnr.it/id/eprint/2882

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