TABLE 3.

Cross-HI test with antiserum obtained by conventional vaccination

AntigenaAntiserum titerb
H1N1H2N2H3N2H4N8H5N9H6N2H7N3H8N4H9N2H10N7H11N9H12N5H13N6H14N5H15N6
H1N164c
H2N8128
H3N864
H4N641284
H5N9-NA12884
H5N1-EA4832
H6N8412844
H7N2-NA4644
H7N1-EA32
H8N41284
H9N24128
H10N7128
H11N1128
H12N5128
H13N64128
H14N54128
H15N98128
  • a Viruses used for DNA vaccine construction were used as the antigen, except for the H4 antigen, where A/duck/NJ/5406-27/94 was used. NA, North American lineage virus; EA, Eurasian lineage virus.

  • b The HI titer of the sera were adjusted to 1:128 with the homologous antigen.

  • c − indicates an HI titer less than 4.