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. 2017 Aug 13;129:50–59. doi: 10.1016/j.ymeth.2017.07.027

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© 2017 Elsevier Inc. 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. 9 — Comparative sentiment analysis. (A) Comparison of the trend of the public emotions about H1N1 influenza and Ebola hemorrhagic fever. (B) Comparison of the number of mass media articles on H1N1, Ebola, and MERS. (C) Comparison of public emotions regarding H1N1, Ebola, and MERS.