TABLE 2

Origins of the HA genes of recombinant influenza viruses

VirusCommentAbbreviationa
A/duck/Alberta/35/76(H1N1)Reference strain of H1 subtype virusH1/ref
A/swine/Kyoto/3/79(H1N1)H1 subtype SIV vaccine strainH1/vac
A/swine/Mie/R01/2012(H1N2)Recent swine isolate of H1 subtype virusH1/iso
A/California/04/09(H1N1)Early isolate of A(H1N1)pdm09 virusesH1/pdm
A/duck/Ukraine/1/1963(H3N8)Reference strain of H3 subtype virusH3/ref
A/swine/Wadayama/3/69(H3N2)H3 subtype SIV vaccine strainH3/vac
A/duck/Czechoslovakia/1956(H4N6)Reference strain of H4 subtype virusH4/ref
  • a H1/ref, A/duck/Alberta/35/76(H1N1); H1/vac, A/swine/Kyoto/3/79(H1N1); H1/iso, A/swine/Mie/R01/2012(H1N2); H1/pdm, A/California/04/09(H1N1); H3/ref, A/duck/Ukraine/1/1963(H3N8); H3/vac, A/swine/Wadayama/3/69(H3N2); H4/ref, A/duck/Czechoslovakia/1956(H4N6).