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SARS-CoV-2 viral RNA was found in 21% of the aerosol (n = 38) and 39% of the mask (n = 23) samples collected from Wuhan hospitals early in 2020. Viable virus was isolated from one surgical mask, but not from any of the viral RNA positive aerosol samples.doi:10.1093/nsr/nwaa250 fatcat:f7nvvusqqfbxfaj6akuoqr6o4q