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Volume 12, Number 9—September 2006

West Nile Virus Infection in Commercial Waterfowl Operation, Wisconsin

Jennifer K. Meece*Comments to Author , Tamara A. Kronenwetter-Koepel*, Mary F. Vandermause*, and Kurt D. Reed*
Author affiliations: *Marshfield Clinic Research Foundation, Marshfield, Wisconsin, USA

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Species of dead birds collected at investigation farm*

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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Page updated: November 17, 2011
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