Article 1

For the use in routine vaccination programmes:

1. (a)

   live attenuated Newcastle disease vaccines shall 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:

   1. (i)

      less than 0,4 if not less than 10⁷ EID₅₀ are administrated to each bird in the ICPI test;

      or

   2. (ii)

      less than 0,5 if not less than 10⁸ EID₅₀ are administered to each bird, in the ICPI test;

2. (b)

   F1. . . . .