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We gathered information about 130 instances from 35 cluster-onset families (COFs) and 41 instances from 16 solitary-onset families (SOFs). The occurrence of 2019 coronavirus infection (COVID-19) in COFs had been somewhat higher than that of SOFs. Our research additionally indicated that patients with experience of high-risk factors (breathing droplets and close contact), advanced age, and comorbidities had been almost certainly going to develop COVID-19