# Commission Delegated Regulation (EU) 2020/688 of 17 December 2019 supplementing Regulation (EU) 2016/429 of the European Parliament and of the Council, as regards animal health requirements for movements within the Union of terrestrial animals and hatching eggs (Text with EEA relevance), Annex VI: CRITERIA FOR VACCINES AGAINST INFECTION WITH NEWCASTLE DISEASE VIRUS

Extent: E+W+S+N.I.

Live attenuated vaccines against infection with Newcastle disease virus must be prepared from a Newcastle disease virus strain for which the master seed has been tested and shown to have an intracerebral pathogenicity index (ICPI) of:
(a) less than 0,4 if not less than 107 EID50 (50 % Embryo Infectious Dose) are administrated to each bird in the ICPI test; or
(b) less than 0,5 if not less than 108 EID50 are administered to each bird in the ICPI test.

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Source: https://www.legislation.gov.uk/eur/2020/688/annex/VI (the official version)
Page: https://openlegislation.uk/eu-regulation-2020-688/annex-VI
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.