Table 1.
Serology and Virus Testing Results from Investigation of WNV Exposure and Infection in Nestlings from Cavity Nests and Open-Cup Nests, Chicago Metropolitan Area, 2006–2007
| |
|
2006 |
2007 |
||||
|---|---|---|---|---|---|---|---|
| Species | Nest type | Nests | Individuals tested | No. positive | Nests | Individuals tested | No. positive |
| American robin (Turdus migratorius) | Open | 5 | 13 | 0 | 1 | 2 | 0 |
| Barn swallow (Sterna hirundo) | Open | 1 | 5 | 0 | 0 | 0 | 0 |
| Brown thrasher (Toxostoma rufum) | Open | 2 | 4 | 0 | 0 | 0 | 0 |
| European starling (Sturnus vulgaris) | Cavity | 2 | 8 | 0 | 0 | 0 | 0 |
| House finch (Carpodacus mexicanus) | Open | 1 | 1 | 0 | 0 | 0 | 0 |
| House sparrow (Passer domesticus) | Cavity | 22 | 54 | 0 | 5 | 20 | 0 |
| House wren (Troglodytes aedon) | Cavity | 4 | 23 | 1a | 4 | 17 | 0 |
| Mourning dove (Zenaida macroura) | Open | 2 | 3 | 1b | 0 | 0 | 0 |
| Northern cardinal (Cardinalis cardinalis) | Open | 3 | 7 | 0 | 0 | 0 | 0 |
| Purple martin (Progne subis) | Cavity | 1 | 4 | 0 | 0 | 0 | 0 |
| Red-winged blackbird (Agelaius phoeneceus) | Open | 4 | 12 | 0 | 0 | 0 | 0 |
| Tree swallow (Tachycineta bicolor) | Cavity | 3 | 17 | 0 | 1 | 4 | 0 |
| Total | 50 | 151 | 2 | 11 | 43 | 0 | |
a
Tested positive for WNV RNA.
b
Tested seropositive for WNV antibodies.