 Dr Mike Catton, ukora mu kigo cyiga ku ndwara zandura no kubwirinzi bwumubiri cyitwa Peter Doherty Institute for Infection and Immunity, yagize ati: Hashize imyaka myinshi, myinshi cyane twarateganyije ko hashobora kuvuka ikibazo nkiki, ni yo mpamvu rero twashoboye kugera ku gisubizo gukora iyo virusi byihuse cyane. 