62.—(1) The National Assembly may, if it considers it necessary to monitor or detect the spread of avian influenza or influenza virus of avian origin in mammals—
(a)require surveillance for avian influenza or influenza virus of avian origin to be carried out on any premises; and
(b)impose (by declaration of an avian influenza (restrictions on mammals) zone or by notice to the occupier of any premises) such measures additional to those set out in articles 58 to 60 as it considers necessary.
(2) An avian influenza (restrictions on mammals) zone must be of such size as the National Assembly considers necessary to reduce the risk of the spread of avian influenza or influenza of avian origin in mammals.