Volume 16, Number 12—December 2010
Research
Anatomy of Bluetongue virus Serotype 8 Epizootic Wave, France, 2007-2008
Benoit Durand
, Gina Zanella, Fabienne Biteau-Coroller, Caroline Locatelli, Florence Baurier, Cécile Simon, Eric Le Dréan, José Delaval, Eric Prengère, Véronique Beauté, and Hélène Guis
, Gina Zanella, Fabienne Biteau-Coroller, Caroline Locatelli, Florence Baurier, Cécile Simon, Eric Le Dréan, José Delaval, Eric Prengère, Véronique Beauté, and Hélène GuisTable 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.
|
