Ubushikirangani bw'uburimyi n'ubworozi bwategetse ko ivyo bikoko, vyari vyaje biva mu gihugu kibanyi ca Tanzania, mu mugambi w'ishirahamwe risanzwe rifasha abakenyezi n'abana, kugira bifashe mu gutwara ibintu bikenewe mu burimyi, gusenya no kuvoma, ko bishirwa mu kibanza ca vyonyene.
