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Volume 8, Number 8—August 2002

Research

West Nile Virus Outbreak in Horses, Southern France, 2000: Results of a Serosurvey

Benoit Durand*Comments to Author , Véronique Chevalier*, Régis Pouillot*, Jacques Labie*, Ingrid Marendat†, Bernadette Murgue†, Hervé Zeller†, and Stéphan Zientara*
Author affiliations: *Agence Française de Sécurité Sanitaire des Aliments, Maisons-Alfort, France; †Institut Pasteur, Paris, France;

Main Article

Table 5

Immunoglobulin G anti-West Nile virus prevalence in equines, by age, sex, breed, and group size, Camargue, France, 2000

Variable OR estimatea 95% CI
Age (years)
<1 Ref
1–2 1.83 0.42 to7.99
3–5 1.39 0.32 to 5.98
6–10 1.13 0.26 to 4.86
11–15 1.25 0.29 to 5.41
16–20 1.24 0.28 to 5.43
21–25 1.20 0.26 to 5.48
>25 1.24 0.25 to 6.15
Sex
Mare Ref.
Gelding 1.13 0.89 to 1.45
Stallion 1.18 0.88 to 1.58
Breed
Pure breeds 1.30 0.97 to 1.74
Camargue 1.40 1.08 to 1.82
Ponies 1.15 0.77 to 1.72
Other Ref.
Group size
1–2 2.18 1.60 to 2.96
3–6 1.81 1.31 to 2.52
7–25 1.09 0.77 to 1.53
>25 Ref.

aOR, odds ratio; 95% CI, 95% confidence intervals.

Main Article

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