African swine fever, which is a virus that is usually fatal in wild boar, can spread to ordinary pigs.
With that, they are also trying to ensure that the infection does not spread to Sweden via the regional management plan.
It has already established itself in Poland, Germany and the Baltic countries and, according to experts, could come to Sweden - based on a worst-case scenario.
Hear state epizoologist Karl Ståhl about why the work is important - and what the disease can do in the clip above.