Volume 12, Number 9—September 2006
Dispatch
West Nile Virus Infection in Commercial Waterfowl Operation, Wisconsin
Table
Species of dead birds | WNV positive, n (%) | No. WNV negative |
---|---|---|
Blue-winged teal (Anas discors) | 16 (100) | 0 |
Northern pintail (A. acuta) | 4 (100) | 0 |
Green-winged teal (A. carolinensis) | 3 (100) | 0 |
Falcated teal (A. falcate) | 3 (100) | 0 |
Northern shoveler (A. clypeata) | 1 (100) | 0 |
Barrow's goldeneye (Bucephala islandica) | 1 (100) | 0 |
Cackling goose (Branta hutchinsii) | 1 (100) | 0 |
Eurasian widgeon (A. penelope)† | 25 (96.1) | 1 |
American widgeon (A. americana) | 15 (93.8) | 1 |
Siberian red-breasted goose (Branta ruficollis) | 3 (50.0) | 3 |
Ross goose (Chen rossii) | 2 (40.0) | 3 |
Mountain quail (Oreortyx pictus) | 0 | 2 |
Common eider (Somateria mollissima) | 0 | 1 |
Hooded merganser (Lophodytes cucullatus)† | 0 | 1 |
Canvasback (Aythya valisineria)† | 0 | 1 |
Domestic turkey (Melleagris gallopavo) | 0 | 1 |
*WNV, West Nile virus.
†Species reported to Centers for Disease Control and Prevention avian mortality database as having tested positive for WNV from 1999 to present (6).
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