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Division Laboratory Criteria

United Kingdom

Original text. Later amendments are not shown.

At least one of the following three:

  • Isolation of a polio virus and intratypic differentiation — Wild polio virus (WPV)

  • Vaccine derived poliovirus (VDPV) (for the VDPV at least 85 % similarity with vaccine virus in the nucleotide sequences in the VP1 section)

  • Sabin-like poliovirus: intratypic differentiation performed by a WHO-accredited polio laboratory (for the VDPV a > 1 % up to 15 % VP1 sequence difference compared with vaccine virus of the same serotype)