Dufite uburambe bwimyaka irenga 10 muri uku guhunga no kohereza ibicuruzwa mu turere no mu bihugu bitandukanye, nka Amerika y'Amajyaruguru, Amerika y'Epfo, Uburasirazuba bwo hagati, Aziya, Afurika, Uburayi. Ibicuruzwa byacu byose birahinduka kandi biratunganye, byose bikurikije icyerekezo cyibisabwa hagati na highlevel ibisabwa kubicuruzwa no kugura, ubunyangamugayo bwa manu burashobora kuzuza ibyo abakiriya bakeneye. Bitewe numusaruro mwinshi no kugura, igiciro cyaragabanutse cyane, kandi isosiyete yacu ihora ishimangira ibitekerezo byo gucunga impande zombi gutsinda, hashingiwe kubuziranenge, igiciro kizaba gifite irushanwa ryiza cyane.