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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*Comments to Author 
Author affiliations: *Erasmus Medical Center, Rotterdam, the Netherlands; †Smedby Health Center, Kalmar, Sweden; ‡Linköping University, Linköping, Sweden; §Umea University, Umea, Sweden; ¶Kalmar University, Kalmar, Sweden

Main Article

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.

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