TABLE 3.
Avian influenza antibody prevalence in Canada geese as determined by blocking enzyme-linked immunosorbent assay comparing 10 locations sampled in 2008 and 2009 and the 2009 Pennsylvania locations divided into urban and rural sample locations.
| Variable | Number of sample locations | n | Positive (%) | Odds ratio (95% confidence interval) |
|---|---|---|---|---|
| Euthanized | 5 | 302 | 82 (27) | 1.2 (0.9–1.6) |
| Released | 5 | 278 | 53 (19) | Referent |
| 2008 | 10 | 304 | 65 (21) | Referent |
| 2009 | 10 | 276 | 70 (25) | 1.2 (0.2–2.5) |
| Pennsylvania urbana | 15 | 422 | 107 | 3.7 (1.7–6.0) |
| Pennsylvania rurala | 13 | 239 | 27 | Referent |
a
GPS data were not available for one location.