sprožijo preiskavo, da se določijo obseg in prvotni vir ali viri okužbe v skladu z določbami Priloge IV, z nadaljnjim testiranjem v skladu s členom 4(1) vsaj vseh klonsko sorodnih zalog semenskega krompirja, in
establish an investigation to determine the extent and primary source(s) of the contamination in accordance with the provisions of Annex IV, with further testing in accordance with Article 4(1), on, at least, all clonally related seed potato stocks, and,