The symptoms of the mild form of COVID-19 are nonspecific. Differential diagnosis should be made using a wide range of infectious (e.g., adenovirus, influenza, human metapneumovirus (HmPV), parainfluenza, respiratory syncytial virus (RSV), rhinovirus (common cold)) and non-infectious (e.g., vasculitis, dermatomyositis, organized cryptogenetic pneumonia) common respiratory disorders.