 Stephen Morse, impuguke mu ko indwara zandura wo kuri Kaminuza ya Columbia muri Amerika mu ishuri ryiga ku buvuzi bwindwara zibyorezo rya Mailman School of Public Health, yabwiye igitangazamakuru Business Insider ati: Birashoboka cyane ko uwo mwana yayanduye mu buryo busanzwe - ahumeka umwuka urimo virusi uvuye mu gukorora kwa nyina. 