Infectivity of an Asymptomatic Patient With Middle East Respiratory Syndrome Coronavirus Infection.

During the MERS outbreak in Korea, one case of asymptomatic or mild MERS-CoV infection was noted. Eighty-two persons were exposed to the case without protection. They were isolated and RT-PCR and serology for MERS were performed. There was no transmission through an asymptomatic MERS case in this study.