Table 1.
Summary results of total sampling and WNV seroprevalence among species classified as year-round residents, summer breeders, migrants, and winter residents in Atlanta, Georgia and Chicago, Illinois
| Migratory status | Atlanta, Georgia, 2010–2016 | Chicago, Illinois, 2005–2012 | ||||||
|---|---|---|---|---|---|---|---|---|
| Sample proportion (N = 1,022) | Tested species (N = 46) | WNV-positive samples (N = 301) | WNV-positive species (N = 19) | Sample proportion (N = 5,232) | Tested species (N = 72) | WNV-positive samples (N = 527) | WNV-positive species (N = 24) | |
| All year resident | 83.5% | 54.5% | 88.4% | 84.2% | 82.3% | 27.8% | 89.0% | 58.3% |
| Summer breeding | 11.4% | 25.0% | 11.3% | 10.5% | 11.8% | 43.1% | 10.1% | 25.0% |
| Migratory stopover | 3.9% | 15.9% | 3.3% | 5.26% | 4.2% | 22.2% | 0.6% | 8.33% |
| Winter resident | 1.2% | 4.5% | 0.0% | 0.0% | 1.5% | 6.9% | 0.4% | 8.33% |