Volume 11, Number 10—October 2005
Research
Mallards and Highly Pathogenic Avian Influenza Ancestral Viruses, Northern Europe
Vincent J. Munster*, Anders Wallensten†‡, Chantal Baas*, Guus F. Rimmelzwaan*, Martin Schutten*, Björn Olsen§¶, Albert D.M.E. Osterhaus*, and Ron A.M. Fouchier*
Table 2
Hemagglutination inhibition assays with postinfection ferret antisera and hyperimmune rabbit antisera raised against H5 influenza A viruses
| Virus isolate | A/Tern/SA/611 | A/Tern/SA/612 | A/Dk/HK/205/771 | A/Dk/HK/205/772 | A/HK/156/971 | A/HK/156/972 |
|---|---|---|---|---|---|---|
| A/Tern/South Africa/61 H5N3 | 1:640‡ | 1:320 | 1:80 | 1:640 | 1:80 | 1:20 |
| A/Duck/Hong Kong/205/77 H5N3 | 1:1,280 | 1:640 | 1:240 | 1:1,280 | 1:160 | 1:80 |
| A/Hong Kong/156/97 H5N1 | 1:1,280 | 1:640 | 1:320 | 1:1,280 | 1:640 | 1:320 |
| A/Vietnam/1194/04 H5N1 | 1:1,280 | 1:40 | 1:640 | 1:80 | 1:640 | <1:20 |
| A/Mallard/Sweden/21/02 H5N2 | 1:640 | 1:320 | 1:160 | 1:640 | 1:160 | 1:20 |
| A/Mallard/Sweden/49/02 H5N9 | 1:320 | 1:320 | 1:40 | 1:320 | 1:160 | 1:40 |
| A/Mallard/Netherlands/3/99 H5N2 | 1:640 | 1:1,280 | 1:160 | 1:5,120 | 1:160 | 1:80 |
| A/Mallard/Sweden/7/02 H5N2 | 1:1,280 | 1:640 | 1:320 | 1:1,280 | 1:320 | 1:40 |
*Hyperimmune rabbit antisera.
†Postinfection ferret antisera.
‡Homologous titers are represented boldfaced and underlined.
