key: cord-0993874-tpnrmj4r
authors: van Rijn, Cees; Somsen, G. Aernout; Hofstra, Leonard; Dahhan, Ghassan; Bem, Reinout A.; Kooij, Stefan; Bonn, Daniel
title: Reducing aerosol transmission of SARS‐CoV‐2 in hospital elevators
date: 2020-09-23
journal: Indoor Air
DOI: 10.1111/ina.12744
sha: 3f422887ef56fc38fde392ad7ff9b98c8dc3d511
doc_id: 993874
cord_uid: tpnrmj4r

nan

There is a worldwide discussion on the role of aerosols in the To investigate aerosol persistence in elevators, we mimic a single cough using a specially designed spray nozzle to disperse a controlled quantity of glycerol/ethanol droplets, that after evaporation of the ethanol have the same size distribution as evaporated respiratory droplets from a single cough. 5 SARS-CoV-2-infected sputum droplets from hospitalized but generally mildly ill people may carry between 10 4 and 10 9 RNA copies per mL. 6 A value of 10 9 implies roughly one virus particle per aerosol droplet with a radius of 5 µm; loud speaking may produce up to a few hundred thousand droplets per minute, 7-9 whereas a single cough can already produce a few million droplets. 10 

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