TABLE 1.
Prevalence of antibodies to avian influenza in 3,205 Canada geese (Branta canadensis) from nine US states as determined by blocking enzyme-linked immunosorbent assay and prevalence of viral RNA detection for 685 Canada geese with the use of a matrix real-time reverse-transcriptase polymerase chain reaction (rRT-PCR).
| State | Number of sample locations |
2008 |
2009 |
Total |
rRT-PCR (2008–2009) |
|||||
|---|---|---|---|---|---|---|---|---|---|---|
| 2008 | 2009 | n | Positive (%) | n | Positive (%) | n | Positive (%) | n | Positive (%) | |
| Georgia | 1 | 10 | 56 | 6 (13) | 301 | 20 (6) | 357 | 26 (7) | 0 | 0 (0) |
| Massachusetts | 4 | 0 | 19 | 6 (32) | 0 | 0 | 19 | 6 (32) | 34 | 0 (0) |
| Minnesota | 4 | 7 | 83 | 19 (23) | 143 | 55 (38) | 226 | 74 (33) | 0 | 0 (0) |
| Mississippi | 4 | 7 | 112 | 1 (0.9) | 128 | 0 | 240 | 1 (0.4) | 213 | 0 (0) |
| New Jersey | 9 | 25 | 163 | 25 (15) | 537 | 123 (23) | 700 | 148 (21) | 100 | 6 (6) |
| North Carolina | 4 | 4 | 115 | 1 (0.9) | 129 | 3 (2) | 244 | 4 (2) | 244a | 0 (0) |
| Pennsylvania | 4 | 29 | 132 | 33 (25) | 694 | 140 (20) | 826 | 174 (21) | 0 | 0 (0) |
| Washington | 4 | 5 | 144 | 10 (7) | 245 | 26 (11) | 389 | 36 (9) | 14 | 0 (0) |
| West Virginia | 4 | 5 | 124 | 10 (8) | 80 | 5 (6.3) | 204 | 15 (7) | 80 | 0 (0) |
| Total | 38 | 92 | 948 | 111 (12) | 2,257 | 372 (16) | 3,205 | 483 (15) | 685 | 6 (0.9) |
a
Same geese tested for rRT-PCR and serologic testing.