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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 4

Immunoglobulin G anti-West Nile virus group-level prevalence in equines by group size, Camargue, France, 2000a

Size class Total Positive (%) Prevalence Ratio 95% CI
1–2 1,006 149 (14.8%) Ref.
3–6 294 73 (24.8%) 1.9 1.4-2.6
7–25 98 40 (40.8%) 4.0 2.6-6.1
>25 31 12 (38.7%) 3.6 1.7-7.6
Total 1,429 274 (19.2%)

a Chi square = 55.68 (3 degrees of freedom), p<0.0001.

Main Article

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