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Volume 8, Number 12—December 2002


West Nile virus Epidemic in Horses, Tuscany Region, Italy

Gian Luca Autorino*, Antonio Battisti*, Vincent Deubel†, Giancarlo Ferrari*, Riccardo Forletta*, Armando Giovannini‡, Rossella Lelli‡, Severine Murri†, and Maria Teresa Scicluna*
Author affiliations: *Istituto Zooprofilattico Sperimentale delle Regioni Lazio e Toscana, Rome, Italy; †Institut Pasteur, Lyon, France; ‡Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise, Teramo, Italy;

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Table 4

Horses, classified by age class and serologic status (immunoglobulin G enzyme-linked immunosorbent assay), included in the analysis to assess age-specific prevalencea

Age class (yrs) Horses tested Inconclusive Positive
0–2 45 3 17
2–4 63 1 21
4–6 49 1 18
6–8 30 1 10
>8 95 3 40
Total 282 9 106

a282 horses included because the age of 2 animals was unknown.

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