Data published in Koel et al. 2013. Science 342:976-979

HI table used for construction of the baselinemap used in "Substitutions near the receptor binding site determine major antigenic change during influenza virus evolution"

The 273 strains of influenza A/H3N2 from data published in Smith et al. 2004. Science 305:371-376 plus the 11 cluster representatives (consensus viruses). Added viruses to the original dataset: BE89REC BE92REC BK79REC EN72REC FU02REC HK68REC SI87REC SY97REC TX77REC VI75REC WU95REC.