18.—(1) This regulation applies where premises are infected premises or where tests under regulation 15 indicate the existence of African horse sickness virus in a horse or carcase at a slaughterhouse.
(2) The Welsh Ministers may declare a control zone, and in addition may declare a protection zone and surveillance zone, around the infected premises or the slaughterhouse (as the case may be).
(3) The control zone must have a radius of at least 20 kilometres, the protection zone must have a radius of at least 100 kilometres and the surveillance zone must have a radius of at least 150 kilometres, each centred on the part of the premises that the Welsh Ministers consider most appropriate for disease control.
(4) The Welsh Ministers must ensure that within those zones—
(a)premises that contain horses are identified as far as is reasonably practicable and without unduly diverting resources from preventing the spread of disease,
(b)a veterinary inspector visits in a systematic way as directed by the Chief Veterinary Officer any such identified premises, and—
(i)inspects and as necessary examines the horses; and
(ii)collects and tests such samples as the Chief Veterinary Officer considers necessary.
(5) The Schedule sets out measures that apply in relation to premises in a control zone.
(6) When the control zone is revoked, the measures in the Schedule cease to have effect, except for the purposes of paragraph 1(4)(a) of that Schedule.
(7) No person may move any horse, or any semen, ovum or embryo of a horse—
(a)out of a protection zone, or
(b)out of a surveillance zone to an area outside any zone,
except under the authority of a licence granted by a veterinary inspector.
(8) No person may move from premises within a protection zone or a surveillance zone—
(a)any ass, donkey, zebra, mule or other hybrid of these except under the authority of a licence granted by a veterinary inspector;
(b)any other horse that shows clinical signs of African horse sickness on the day of the proposed move.
(9) The Welsh Ministers may declare that any other measure considered necessary to reduce the risk of spread of African horse sickness virus applies in respect of the whole or any part of the control zone, protection zone or surveillance zone.