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Spatial risk assessment of herd sero-status of Aujeszky's disease in a county in Hungary
Authors:Solymosi Norbert  Reiczigel Jeno  Berke Olaf  Harnos Andrea  Szigeti Sándor  Fodor László  Szigeti Gábor  Bódis Katalin
Affiliation:Department of Biomathematics and Informatics, Faculty of Veterinary Science, Szent István University, István u. 2, H-1078 Budapest, Hungary. solymosinorbert@freemail.hu
Abstract:
A Geographic Information System (VetEpiGIS) was used to analyze the ADV (Aujeszky's disease virus) sero-status in large-scale pig units regarding certain geographical features in a county of southern Hungary. The ADV sero-statuses were collected from all swine units in Csongrád county in 1998-2000. The units' coordinates were combined with a vector graphical digital map of the county, with a resolution of 1:100,000. Logistic regression tested the associations between sero-status of large-scale units and presence of topographical features, other units and villages in the neighborhood. "Neighborhood" was defined by circular zones with radius 1-10km around the unit (in 1km increments; one logistic regression for each radius). The following topographical features showed significant positive association with the ADV seropositivity: lake (3km OR: 5.7; 5km OR: 7.5; 6km OR: 6.1; 10km OR: 5.4) and highway (5km OR: 4.2; 6km OR: 5.3). Other features had negative association with ADV seropositivity: forest (3km OR: 0.13; 4km OR: 0.15; 5km OR: 0.15; 6km OR: 0.10; 7km OR: 0.10; 8km OR: 0.23) and uninfected large-scale unit (4km OR: 0.07; 5km OR: 0.27; 6km OR: 0.32; 7km OR: 0.31).
Keywords:
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