Volume 9, Number 11—November 2003
Research
Rapid Antigen-Capture Assay To Detect West Nile Virus in Dead Corvids
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.