Table 4.
Hemagglutination inhibition (HI) titers of immune/reference sera against H5N1 viruses in HI assay with five different types of RBCs
|
Sr. No. |
Virus strain |
Antisera |
RBCs |
||||
|---|---|---|---|---|---|---|---|
| |
|
|
Turkey (0.5%) |
Fowl (0.5%) |
Goose (1%) |
Guinea Pig (0.75%) |
Horse (1%) |
| HI titer | |||||||
| 1 |
A/chicken/Navapur/India/7972/2006 (H5N1) |
H5N1-NIV |
320 |
160 |
320 |
320 |
1280 |
| |
|
H5N1-OIE |
20 |
20 |
20 |
20 |
20 |
| |
|
H5N1-WHO |
320 |
80 |
160 |
320 |
640 |
| 2 |
A/chicken/Manipur/NIV9743/2007 (H5N1) |
H5N1-NIV |
No titer |
20 |
No titer |
160 |
640 |
| |
|
H5N1-OIE |
20 |
No titer |
No titer |
20 |
20 |
| |
|
H5N1-WHO |
160 |
160 |
320 |
640 |
320 |
| 3 |
A/chicken/India/AS-NIV15983/ 2008/11/27 (H5N1) |
H5N1-NIV |
1280 |
640 |
2560 |
1280 |
320 |
| |
|
H5N1-OIE |
80 |
40 |
320 |
320 |
20 |
| |
|
H5N1-WHO |
1280 |
640 |
2560 |
1280 |
160 |
| 4 |
A/chickenIndia/WB-NIV2811/2008 (H5N1) |
H5N1-NIV |
2560 |
640 |
2560 |
5120 |
5120 |
| |
|
H5N1-OIE |
80 |
160 |
40 |
1280 |
640 |
| |
|
H5N1-WHO |
1280 |
640 |
1280 |
5120 |
5120 |
| 5 |
A/chicken/India/NIV33487/06-RG-2008 (H5N1) |
H5N1-NIV |
320 |
320 |
640 |
480 |
480 |
| |
|
H5N1-OIE |
160 |
240 |
320 |
240 |
480 |
| Geometric mean titer | 245.1 | 165.0 | 403.2 | 434.3 | 339.0 | ||
Note: For calculation of geometric mean antibody titers, value for “No titer” was 5.