This version updates the 27 March publication by providing definitions of droplets by particle size and adding three relevant publications. Modes of transmission of the COVID-19 virus Respiratory in
Correspondence
前言 冠狀病毒(CoV)為一群有外套膜之RNA病毒，外表為圓形，在電子顯微鏡下可看到類似皇冠的突起因此得名。可再細分為四個屬: alpha, beta, gamma, and delta。已知會感染人類的冠狀病毒包括alpha CoV的HCoV-229E , HCoV-NL63以及beta CoV的HCoV-HKU1, HCoV-OC43, MERS-CoV, SARS-CoV。冠狀病毒是造成人類
The deadly outbreak among members of a choir has stunned health officials, who have concluded that the virus was almost certainly transmitted through the air from one or more people without symptoms.
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