AdvertisementViral Superspreader? How One Man Triggered A Deadly MERS OutbreakJune 04, 2015Michaeleen DouclefffacebookEmailPatient one: A businessman brought the Middle East respiratory syndrome to South Korea in early May. Since then, he has likely spread the virus to more than 20 other people. Several of those have passed the virus onto others. (Maia Majumder/Health Map)