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Volume 10, Number 12—December 2004


West Nile Virus Outbreak in North American Owls, Ontario, 2002

Ady Y. Gancz*Comments to Author , Ian K. Barker*, Robbin Lindsay†, Antonia Dibernardo†, Katherine McKeever‡, and Bruce Hunter*
Author affiliations: *University of Guelph, Guelph, Ontario, Canada; †Health Canada, Winnipeg, Manitoba, Canada; ‡Owl Foundation, Vineland, Ontario, Canada

Main Article

Table 2

Results of enzyme-linked immunosorbent assay for detection of anti-WNV IgG in survivorsa of a WNV outbreak, the Owl Foundation, 2002b

Species Tested No. seropositive (%)
Barn Owl (Tyto alba) 10 8 (80)
Short-eared Owl (Asio flammeus) 8 8 (100)
Barred Owl (Strix varia) 2 2 (100)
Great Horned Owl (Bubo virginianus) 12 12 (100)
Burrowing Owl (Athene cunicularia) 10 9 (90)
Flammulated Owl (Otus flammeolus) 8 1 (12.5)
Eastern Screech Owl (Megascops asio) 33 24 (72.7)
Northern Pygmy Owl (Glaucidium gnoma) 5 2 (40)
Elf Owl (Micrathene whitneyi) 1 1 (100)
Peregrine Falcon (Falco peregrinus) 2 2 (100)
Total 91 69 (75.8)

aBirds kept outdoors and not vaccinated against WNV.
bWNV, West Nile virus; Ig, immunoglobulin.

Main Article