[FILE PHOTO: A laboratory worker carries out an autopsy on dead wild geese, looking for evidence of the bird flu virus, in the laboratory of the Hungarian national food safety authority in Budapest]Belgian authorities found the H5N8 bird flu virus at a farm north of Brussels on Feb.1 and imposed measures to contain the spread of the highly contagious virus, the Belgian agriculture ministry said on its website on Thursday. "The virus that has been severely affecting neighbouring countries for several months has now reached Belgium. Various strains of the bird flu virus have been found in recent months in Germany, France, Italy, Greece and Portugal, as well as elsewhere around the world.