Dedicated 'EUSurveys' on the preparedness to detect, identify, confirm and manage patients with suspect or confirmed Ebola Virus Disease, MERS-coronavirus patients and cases of new avian influenza strains have been carried out at the occasion of the EU coordination and management of specific events, which has shown a good level of preparedness of Member States.

Live 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 either:

A multi-strain dossier means a single dossier containing the relevant data for a unique and thorough scientific assessment of the different options of strains/combinations of strains permitting the authorisation of vaccines against antigenically variable viruses.

(2) Experience has shown that certain strains of the avian influenza virus, which are currently not covered by the control measures of the Directive, have the ability to mutate to highly pathogenic strains after having circulated in the poultry population for some time.

A multi-strain dossier means a single dossier containing the relevant data for a unique and thorough scientific assessment of the different options of strains/combinations of strains permitting the authorisation of vaccines against antigenically variable viruses.

3. Where a strain of Newcastle-disease virus with an ICPI (intracerebral pathogenicity index) greater than 0,7 and lower than 1,2 is isolated in a flock of poultry that presents no clinical signs of Newcastle disease and it has been demonstrated by the Community reference laboratory referred to in Article 15 that the virus isolate in question derives from an atenuated live Newcastle-disease vaccine, the competent authority may grant a derogation from the requirements under (a) to (f), of paragraph 1, provided that the holding concerned is placed under official surveillance for 30 days and must require in particular that: