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. 2020 Dec 23;147:106338. doi: 10.1016/j.envint.2020.106338

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© 2020 The Authors

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

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Fig. 5 — Overall risk in the presence of nonpharmaceutical interventions in the MCT scenario (A) and the LCT scenario (B) using k = 0.00246 for pathways (1) to (4) and 0.246 for pathways (5) and (6). The upper limit of error bar indicates the overall risk using saliva volume and particle number + 10%, and the 95 percentile value of k with normal distribution and the lower limit of error bar indicates the overall risk using saliva volume and particle number − 10%, and the 5 percentile value of k with normal distribution.