Coronavirus Disease 2019 Patients in Earlier Stages Exhaled Millions of Severe Acute Respiratory Syndrome Coronavirus 2 Per Hour.

Ma, Jianxin; Qi, Xiao; Chen, Haoxuan; Li, Xinyue; Zhang, Zheng; Wang, Haibin; Sun, Lingli; Zhang, Lu et al. · Clin Infect Dis · 2021

cross_sectional · Level IV

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Abstract

Coronavirus disease 2019 (COVID-19) patients exhaled millions of severe acute respiratory syndrome coronavirus 2 RNA copies per hour, which plays an important role in COVID-19 transmission. Exhaled breath had a higher positive rate (26.9%, n = 52) than surface (5.4%, n = 242) and air (3.8%, n = 26) samples.

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