17.—(1) Any premises which are partly inside and partly outside a vaccination zone shall be deemed to be wholly within it.
(2) Any premises which are partly inside and partly outside a vaccination surveillance zone shall be deemed to be wholly within it (except premises which are also partly within a vaccination zone).
(3) An area shall remain a vaccination zone or a vaccination surveillance zone (or part of one) until the Scottish Ministers–
(a)amend the declaration creating it so as to exclude that area; or
(b)revoke that declaration.
(4) Any amendment or revocation of a declaration creating a vaccination zone or a vaccination surveillance zone shall refer to that declaration and state the date and time it is to take effect.