The measures provided for in Articles 13 to 23 shall be maintained for at least 21 days following the date of completion of preliminary cleansing and disinfection on the infected holding in accordance with instructions given by the official veterinarian and until holdings located in the protection zone have been tested in accordance with instructions given by the official veterinarian.

When the measures provided for in Articles 13 to 23 are no longer to be maintained, as provided for in paragraph 1 of this Article, the measures laid down in Article 25 shall apply in the former protection zone, until they are no longer to be applied as provided for in Article 26.