TABLE 1.
Performance of antigen capture enzyme immunoassays for detection of avian influenza A virus types H5N1 and H9N2
| Expt no. | Virus | Virus titer in sample tested (TCID50/ml) | Result by enzyme immunoassaya
|
|
|---|---|---|---|---|
| Directigen | x/pect | |||
| 1 | A/Vietnam/1203/2004 (H5N1) wt | 50 | − | − |
| 5 × 104 | − | − | ||
| A/Vietnam/1203/2004 (H5N1) ca | 50 | − | − | |
| 5 × 104 | + | + | ||
| A/chicken/Hong Kong/G9/97 (H9N2) wt | 50 | − | − | |
| 5 × 104 | + | + | ||
| A/chicken/Hong Kong/G9/97 (H9N2) ca | 50 | − | − | |
| 5 × 104 | + | + | ||
| 2 | A/Vietnam/1203/2004 (H5N1) wt | 10 | − | − |
| 102 | − | − | ||
| 103 | − | − | ||
| 104 | − | − | ||
| 105 | − | − | ||
| 106 | +* | + | ||
| A/Hong Kong/491/1997 (H5N1) wt | 10 | − | − | |
| 102 | − | − | ||
| 103 | − | − | ||
| 104 | − | − | ||
| 105 | − | − | ||
| 106 | − | − | ||
| A/Indonesia/05/2005 (H5N1) wt | 10 | − | − | |
| 102 | − | − | ||
| 103 | − | − | ||
| 104 | − | − | ||
| 105 | − | +* | ||
| 106 | + | + | ||
a
*, weakly positive.