Demographic, clinical and laboratory characteristics of enrolled subjects
The demographic and baseline clinical characteristics of the participants are summarized in Tables 1 and S1. The range of ages was 22-87 (Median = 55.5±18.5). More than half (59%, 49/83) of the subjects were male and 41% (34/83) were females. Data on the sampling time post-symptoms were available in only 70 participants. Samples were collected between 0-7 days post-symptoms in 54.2% (38/70), between 8-16 days post-symptoms in 38.5% (27/70) and >16 day post-symptoms in 5.7% (4/70) of the participants. In only one participant (1.2%), symptoms appeared 5 days after sampling. Clinical data of 47 (56.6%) subjects were only available, the majority of whom (89.3%, 42/47) were symptomatic as they showed at least one of the following symptoms [fever (n = 40), pharyngitis (n = 38), chest pain and dyspnea (n = 37, each), cough (n = 36) and diarrhea (n = 8)] and 5 subjects (10.6%) were asymptomatic. Radiological data were available in 44 participants, 84% (37/44) of whom showed radiological findings of various grades and 7 participants (15.9%) had no radiological findings.