Volume 9, Number 11—November 2003
Research
Rapid Antigen-Capture Assay To Detect West Nile Virus in Dead Corvids
Robbin Lindsay*
, Ian Barker†, Gopi Nayar‡, Michael Drebot*, Sharon Calvin†, Cherie Scammell‡, Cheryl Sachvie‡, Tracy Scammell La Fleur‡, Antonia Dibernardo*, Maya Andonova*, and Harvey Artsob*
, Ian Barker†, Gopi Nayar‡, Michael Drebot*, Sharon Calvin†, Cherie Scammell‡, Cheryl Sachvie‡, Tracy Scammell La Fleur‡, Antonia Dibernardo*, Maya Andonova*, and Harvey Artsob*
Table
Sensitivity and specificity of the VecTest assay to detect West Nile virus (WNV) in oropharyngeal and cloacal swabs collected from corvids in Ontario and Manitoba
| Species tested (y) | N | Oropharyngeal swabs |
Cloacal swabs |
||
|---|---|---|---|---|---|
| Sensitivity (%) | Specificity (%) | Sensitivity (%) | Specificity (%) | ||
| Ontario |
|||||
| American Crows (2001) |
33 |
92.8 |
79 |
58.3 |
94.7 |
| Blue Jays (2001) |
28 |
60 |
100 |
40 |
100 |
| American Crows (2002) |
222 |
83.3 |
95.8 |
NDa |
ND |
| Manitoba |
|||||
| American Crows |
109b |
83.9 |
93.6 |
83.1 |
97.9 |
| Blue Jays |
31c |
71.4 |
100 |
57.1 |
100 |
| Common Ravens |
6b |
100 |
100 |
100 |
0 |
| Black-billed Magpies | 4 | 0 | 100 | 66.7 | 100 |
aND, not done.
bCloacal swabs were not available from one bird in each of these groups of birds.
cAn oropharyngeal swab was not taken from one of the Blue Jays.
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