1.Holdings shall be recognised as contact holdings where the official veterinarian finds, or considers on the basis of the epidemiological inquiry carried out in accordance with Article 8, that African swine fever may have been introduced, either from other holdings to the holding referred to in Article 4 or 5, or from the latter holding to other holdings.
Article 4 shall be applied in such holdings until the presence of African 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 from the pigs, in accordance with the diagnostic manual, when they are killed in order that the presence of African swine fever virus in these holdings can be confirmed or ruled out.