Since 31 December 2019, over 9 million cases of SARS-CoV-2 have been reported on five continents. During the 2003 SARS outbreak, the reported burden of asymptomatic infections was 7.5% among… Click to show full abstract
Since 31 December 2019, over 9 million cases of SARS-CoV-2 have been reported on five continents. During the 2003 SARS outbreak, the reported burden of asymptomatic infections was 7.5% among healthcare workers, and 13% among SARS-CoV positive cases [1]. In the current pandemic (COVID-19), the percentage of asymptomatic carriers is even higher up to 56.5% [2], posing a serious challenge to controlling the spread.
               
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