 Uyu mugera niwakwiragira muri aka karere, ibara rizogwa. Muganga Pierre Mpele, yahoze aserukira ikigo mpuzamakungu kijejwe amagara yabantu mu bihugu vyinshi vya Afrika yuburengero yavuze ko amazu yo muri Afrika ashobora kurangwamwo abantu benshi, aho binashika ko abantu 12 basangira inzu yicumba kimwe. 