Clinical and pathologic responses of American crows (Corvus brachyrhynchos) and fish crows
A DNA vaccine for West Nile virus (WNV) was evaluated to determine whether its use could protect fish crows (Corvus ossifragus) from fatal WNV infection.
After an acclimatization period of approximately 1 month, the 10 crows in group 1 (9 fish crows and 1 American crow [C.
American Crows also became infected after consuming a WNV-infected House Sparrow carcass (83% susceptibility, n=6); three Black-billed Magpies and a Fish Crow
did not become infected after consuming infected House Sparrows or infected mice.
We collected postmortem specimens from 20 corvids, including 12 American Crows (Corvus brachyrhynchos), 4 Fish Crows
(Corvus ossifragus), and 4 Blue Jays (Cyanocitta cristata), that had died (or in one case had been euthanized after becoming moribund) after experimental infection with the New York 1999 strain of WNV.
8) 27 Blue Jay 7 (25) 21 Fish Crow
0 (--) 2 American Robin 0 (--) 0 House Sparrow 0 (--) 1 Other species 2 (25) 6 Total(e) 38 (40) (PPV=27.
In the other three NYC boroughs with one or two human cases, WN virus-positive birds (American Crows in Queens and Manhattan and a Fish Crow
in Brooklyn) were found, and dead crow densities increased before the dates of onset of human case (Figures 2B-D), with a maximum weekly dead crow density in Manhattan of 1.
Avian species that were [is greater than] 35% positive and for which at least 10 birds were tested included American Kestrel (57%, n=14), Cedar Waxwing (60%, n=10), Ovenbird (50%, n=18), American Crow (47%, n=1,687), Fish Crow
(47%, n=45), and Red-tailed Hawk (43%, n=14).
West Nile virus antibody prevalence in American crows (Corvus brachyrhynchos) and fish crows
(Corvus ossafragus) in Georgia, U.
West Nile virus quantification in feces of experimentally infected American and fish crows
Host-range restriction of chimeric yellow lever-West Nile vaccine in fish crows
Poor sensitivity occurred in most raptors, Mourning Doves (Zenaida macroura), Fish Crows
(Corvus ossifragus), and American Robins (Turdus migratorius).