Movement of non-slaughter pigs out of the zone is not allowed until 30 days have elapsed. Protection and Surveillance zones remain in place for 30 days after the disinfection of the infected premises. During this period, the SVS visit all pig farms and may test blood or tissue samples. Under EU rules all pigs on infected farms must be slaughtered and their carcases destroyed. A Form B imposes restrictions on the movement of pigs to and from the named premises.
Form D is the notice to be displayed at the entrance to the infected premises.
Initial outbreaks occurred in May 1991 and were controlled in the same way as the current swine fever outbreaks. In June 1991, as the outbreaks continued, a huge control area was set up in Humberside and adjacent areas, which lasted until October, when the economic and pig welfare damage became intolerable and control of the disease was abandoned. A single outbreak was reported in 1987 but retrospectively acknowledged to be a false positive due to border disease virus. In 1971 there were three outbreaks in Humberside.