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Volume 8, Number 12—December 2002

Research

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 2

Comparison between first sampling (acute, October 1998) and second sampling (convalescent, November 1998) complement fixation test results in horses from the stables with clinical cases (zone A)

1st sampling
Positive Negative Total
2nd sampling Positive 29 1 30
2nd sampling Negative 18 75 93
Total 47 76 123

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