“The direction of wild boar movement in general is to the Western territories...it means from Russia to Belarus, from Belarus to Poland, from Poland to Germany and probably will be from Germany to France” As the Head of the Department of Swine Diseases at the National Veterinary Research Institute until his retirement, Professor Zigmunt Pejsak in Poland played a central role in the country's battle against African swine fever. In conversation with journalist Peter Best, he discusses how the ASF virus has travelled from East to West in European wild boar populations and the possibilities for its further spread.