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. 2020 Feb 7;65(6):425–427. doi: 10.1016/j.scib.2020.02.005

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© 2020 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.

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. 2 — The transmission rate of 2019-nCoV, with trend lines determined by EMD (dotted blue) and Least Squared (LS, solid red) and the trend after the quarantine of Wuhan (dotted black) added. The quarantine was introduced on January 23, 2020, we count its effects from the following day of January 24. The peak time estimate is made based on the extension of the trend.