1.Holdings shall be recognised as contact holdings where the official veterinarian finds, or considers on the basis of the epidemiological enquiry carried out in accordance with Article 8, that classical swine fever may have been introduced, either from other holdings to the holding referred to in Article 4 or Article 5, or from the holding referred to in Article 4 or Article 5 to other holdings.
The provisions of Article 4 shall be applied in such holdings until the suspicion of classical swine fever has been officially ruled out.
2.The competent authority shall apply the measures provided for in Article 5(1) in the contact holdings referred to in paragraph 1 of this Article if the epidemiological situation so requires.
A sufficient number of samples shall be taken in accordance with the diagnostic manual from the pigs when they are killed in order that the presence of classical swine fever virus in these holdings can be confirmed or ruled out.
3.The main criteria and risk factors to be considered for the application of the measures provided for in Article 5(1)(a) in contact holdings are laid down in Annex V. These criteria and risk factors may subsequently be amended or supplemented to take account of scientific developments and experiences, in accordance with the procedure referred to in Article 26(2).