Amino acid differences in antigenic sites between type 2 polioviruses.

a iVDPVs (i), cVDPVs (c), VDPVs found in sewage (e) and wild polioviruses (w) are shown. All these viruses were analysed in Fig 1 where EMBL Data Library accession numbers for published capsid sequences are shown. Names for some viruses are shortened in the table. b Amino acid in single letter code,—indicates the same amino acid as Sabin 2, d indicates deletion. Amino acid differences in antigenic sites between type 2 polioviruses.