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Title: Scenarios to manage the demand for N95 respirators for healthcare workers during the COVID-19 pandemic
Authors: Sun, Y. 
Otomaru, H. 
Quaye, S.E.D. 
Somani, J.
Bagdasarian, N.
Beh, D.L.L.
Fisher, D.A. 
Cook, A.R. 
Dickens, B.L. 
Keywords: COVID-19 pandemic
Healthcare resources
Mathematical modelling
N95 respirators
Issue Date: 2020
Publisher: Dove Medical Press Ltd
Citation: Sun, Y., Otomaru, H., Quaye, S.E.D., Somani, J., Bagdasarian, N., Beh, D.L.L., Fisher, D.A., Cook, A.R., Dickens, B.L. (2020). Scenarios to manage the demand for N95 respirators for healthcare workers during the COVID-19 pandemic. Risk Management and Healthcare Policy 13 : 2489-2496. ScholarBank@NUS Repository.
Rights: Attribution-NonCommercial 4.0 International
Abstract: Background: By estimating N95 respirator demand based on simulated epidemics, we aim to assist planning efforts requiring estimations of respirator demand for the healthcare system to continue operating safely in the coming months. Methods: We assess respiratory needs over the course of mild, moderate and severe epidemic scenarios within Singapore as a case study using a transmission dynamic model. The number of respirators required within the respiratory isolation wards and intensive care units was estimated over the course of the epidemic. We also considered single-use, extended-use and prolonged-use strategies for N95 respirators for use by healthcare workers treating suspected but negative (misclassified) or confirmed COVID-19 patients. Results: Depending on the confirmed to misclassified case ratio, from 1:0 to 1:10, a range of 117.1 million to 1.1 billion masks are required for single-use. This decreases to 71.6–784.4 million for extended-use and 12.8–148.2 million for prolonged-use, representing a 31.8–38.9% and 86.5–89.1% reduction, respectively. Conclusion: An extended-use policy should be considered when short-term supply chains are strained but planning measures are in place to ensure long-term availability. With severe shortage expectations from a severe epidemic, as some European countries have experienced, prolonged use is necessary to prolong supply. © 2020 Sun et al.
Source Title: Risk Management and Healthcare Policy
ISSN: 11791594
DOI: 10.2147/RMHP.S275496
Rights: Attribution-NonCommercial 4.0 International
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