5.—(1) Where an epidemiological inquiry is required under this Order, it must try to establish at least–
(a)the length of time that swine vesicular disease virus may have existed on premises;
(b)the origin of that virus;
(c)the identification of other premises contaminated with that virus from the same source;
(d)the movement of any person or thing which could have carried that virus to or from the premises; and
(e)the possibility that pigs living in the wild may be involved in the spread of that virus.
(2) An epidemiological inquiry must, unless discontinued under this Order, proceed until the facts relevant to the inquiry are, so far as is practicable, established.