Table 1.
Comparison of results between ID‐vet NP ELISA and HI test for field sera from different ducks holdings
| ID‐vet NP ELISA/HIa | |||||
|---|---|---|---|---|---|
| Posb/pos | Posc/neg | Negd/pos | Nege/neg | % agreement | |
| Holding 1 | 13 | 6 | 10 | 21 | 68 |
| Holding 2 | 20 | 16 | 4 | 10 | 60 |
| Holding 3 | 11 | 2 | 28 | 9 | 40 |
| Holding 4 | 15 | 4 | 13 | 18 | 66 |
| Holding 5 | 6 | 31 | 2 | 11 | 34 |
| Holding 6 | 20 | 24 | 0 | 3 | 49 |
| Holding 7 | 2 | 1 | 14 | 29 | 67 |
Sera from seven different holdings were tested by IDVet NP ELISA and HI test using reference antigens H5N3W and H7N7W.
a
Sera were tested using H5 or H7 antigens recommended by the reference European laboratory.
b
Number of sera tested positive with ID‐vet NP ELISA and HI test.
c
Number of sera tested positive with ID‐vet NP ELISA, but negative with HI tests.
d
Number of sera tested negative with ID‐vet NP ELISA, but positive with HI tests.
e
Number of sera tested negative with ID‐vet NP ELISA and with HI tests.