1.The epizootiological enquiry shall deal with:
(a)the length of time during which the disease may have existed on the holding before being notified or suspected;
(b)the possible origin of the disease on the holding and the identification of other holdings on which there are animals of susceptible species which may have become infected or contaminated;
(c)the movement of persons, animals, carcases, vehicles, equipment or any other substances likely to have carried the agent of the disease to or from the holdings in question;
(d)the presence and distribution of disease vectors as appropriate.
2.A crisis unit shall be established in order to provide full coordination of all measures necessary to ensure eradication of the disease as quickly as possible and for the purpose of carrying out the epizootiological enquiry.
The general rules concerning national crisis units and the Community crisis unit shall be laid down by the Council, acting by a qualified majority on a proposal from the Commission.