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Volume 16, Number 12—December 2010

Research

Anatomy of Bluetongue virus Serotype 8 Epizootic Wave, France, 2007-2008

Benoit DurandComments to Author , Gina Zanella, Fabienne Biteau-Coroller, Caroline Locatelli, Florence Baurier, Cécile Simon, Eric Le Dréan, José Delaval, Eric Prengère, Véronique Beauté, and Hélène Guis

Author affiliations: Agence Française de Sécurité Sanitaire des Aliment, Maisons-Alfort, France (B. Durand, G. Zanella); Centre International de Recherche Agronimique pour le Développement, Montpellier, France (F. Biteau-Coroller, H. Guis); Laboratoire Départemental d'Analyses 08, Hagnicourt, France (C. Locatelli); Laboratoire Départemental d'Analyses 18, Bourges, France (F. Baurier, C. Simon); Laboratoire Départemental d'Analyses 35, Rennes, France (E. Le Dréan); Laboratoire Départemental d'Analyses 36, Chateauroux, France (J. Delaval); Laboratoire Départemental d'Analyses 37, Tours, France (J. Delaval, E. Prengère); and Laboratoire Départemental d'Analyses 49, Angers, France (V. Beauté)

Main Article

Table 4

Logistic model of animal seropositivity in cattle according to the local conditions in 6 departments aligned on an east–west transect, France, winter 2007–2008*

Variable Odds ratio p value
Department
18: Cher Reference
41: Loir-et-Cher 0.21 <0.0001
36: Indre 0.12 <0.0001
37: Indre-et-Loire 0.09 <0.0001
49: Maine-et-Loire 0.002 0.0009
35: Ille-et-Vilaine
0.007
0.0002
Confirmed clinical cases reported in 2007
1.49
0.01
Spatial density of cows in the municipality 0.84† 0.02
Spatial density of sheep flocks in the municipality
NS
0.15
Edge density between arable land and forests or seminatural areas 1.66‡ 0.02
Edge density between pastures and forests or seminatural areas 2.06‡ 0.001

*NS, not significant.
†Change in the odds of seropositivity when spatial density is increased by 10 cows/km2.
‡Change in the odds of seropositivity when edge density is increased by 10 m/ha.

*NS, not significant.
†Change in the odds of seropositivity when spatial density is increased by 10 cows/km2.
‡Change in the odds of seropositivity when edge density is increased by 10 m/ha.

Main Article

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