15.—(1) If the Minister knows or suspects that the disease exists in any area he may, by special order, declare the area to be an infected area.
(2) An area shall remain an infected area until such date as may be specified in the special order or, if none, until the special order is withdrawn by the Minister.
(3) The provisions of article 16 shall apply in an infected area.
(4) Any premises which are partly inside and partly outside an infected area shall be deemed to be wholly inside the area.