|  |  | rRT-PCR | Virus Isolation | |||
---|---|---|---|---|---|---|---|
Year | Total samples tested | Total no. of birds represented | No. pos/total tested | % pos | No. pos/total tested | % of total pos | % of rRT-PCR pos for VI |
2005 | 443 | 888 | NAa | NA | 4/443 | 0.9 | NA |
2006 | 678 | 2,681 | 41/678 | 6.0 | 3/41 | 0.4 | 7.3 |
2007 | 1,018 | 508 | 49/1,018 | 4.8 | 2/49 | 0.2 | 4.1 |
Total | 2,139 | 4,077 | 90/2,139 | 4.2 | 9/533 | 1.7 | 5.5b |