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. 2020 Oct 20;7:584036. doi: 10.3389/fmed.2020.584036

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Copyright © 2020 Bernard, Desoubeaux, Bodier-Montagutelli, Pardessus, Brea, Allimonnier, Eymieux, Raynal, Vasseur, Vecellio, Mathé, Guillon, Lanotte, Pourchez, Verhoeven, Esnouf, Ferry, Eterradossi, Blanchard, Brown, Roingeard, Alcaraz, Cinquin, Si-Tahar and Heuzé-Vourc'h.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) Decontamination yields obtained after dry- or moist-air heating treatment for influenza A H3N2/Scotland/20/74 virus and oropharyngeal bacteria. (B) Decontamination yields obtained after moist-air heating treatment for swine porcine epidemic diarrhea virus [(PEDV) left panel] and avian infectious bronchitis virus of chicken [(IBV) right panel] coronaviruses. Lack of virus re-isolation was arbitrarily indicated in the figure as a titer equal to the lower limit of detection (LLOD) of the re-isolation process. (C) Filtration properties of surgical masks (upper panel) and filtering face piece type 2 (FFP2) respirators (lower panel) for the influenza A H3N2/Scotland/20/74 virus strain and for Staphylococcus aureus ATCC 6538 (on surgical masks only for the latter as specified by EN 14683 guidelines). (D) Measurement of inspiratory resistance for surgical masks (left panel) and FFP2 respirators (right panel). All results are expressed as mean ± SEM. CFU, colony-forming unit; ΔP, differential of pressure; L/min, liter per minute; ND, not determined; Pa/cm², Pascal per square centimeter; PFU, particle-forming unit; SEM, standard error of the mean.