Volume 8, Number 12—December 2002
Research
West Nile virus Epidemic in Horses, Tuscany Region, Italy
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.
