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. 2020 Jun 18;326:108405. doi: 10.1016/j.mbs.2020.108405

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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. A.3 — Symptomatic infections under four different policies corresponding to $s_{3}^{(2)} = 0.4, 0.5, 0.6, 0.8$ with (a) $T_{1} = 30, T_{2} = 60$ and (b) $T_{1} = 30$ and $T_{2} = 90$ . Both plots are for $s_{2}^{(1)} = 0.4$ and $T_{e n d} = 120$ . The benchmark simultaneous-release policy ( $s_{2}^{(1)} = s_{3}^{(2)} = 0.8$ ) is also plotted. Plot (a) shows a much higher peak size than plot (b) for $s_{3}^{(2)} = 0.4$ .