Gammainfluenzavirus  7 (−)ssRNA segments  C  Humans (particularly in infants and children), pigs, cattle  Influenza C viruses (ICVs)6 lineages: C/Taylor, C/Mississippi, C/Aichi, C/Yamagata, C/Kanagawa and C/Sao Paulo  Usually mild flu  HEF  TerminalC/Johannesburg/1/66 (C/Aichi lineage): Neu5,9Ac2α2,6Gal  [69,70,71,72]