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Our case verified the asymptomatic infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) as previously reported ( [3,4]) and suggested that 1) the transmission of COVID-19 seemingly could occur during the incubation period and may cause a potential threat to public health, and 2) the CT examination is very helpful for the early diagnosis of COVID-19 because the abnormalities (e.g., unilateral or bilateral subpleural multifocal ground-glass opacities of the lungs) associated with COVID-19 could be visualized on CT while subjects remain asymptomatic ( [5]).
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