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. 2021 Feb 12;8(3):ofab078. doi: 10.1093/ofid/ofab078

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© The Author(s) 2021. Published by Oxford University Press on behalf of Infectious Diseases Society of America.

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs licence (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reproduction and distribution of the work, in any medium, provided the original work is not altered or transformed in any way, and that the work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

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Figure 1. — Recent outbreaks of emerging respiratory viruses in humans. A, Enterovirus A71 worldwide outbreak. Presented cases are from the Asian-Pacific region only, 1998–2018 [12]. B, Severe acute respiratory syndrome coronavirus (SARS-CoV) November 2002–July 2003 outbreak. This virus is zoonotic in origin [15]. C, Adenovirus 14 multiple outbreaks [16]. D, Influenza A (H1N1) pdm09 virus. Presented cases are for the years 2009–2018. This virus is zoonotic in origin [11]. E, Middle East respiratory syndrome coronavirus. Presented cases include data from September 2012 to November 2020. This virus is thought to be of zoonotic origin [17]. F, Enterovirus D68 multiple outbreaks. Cases presented here are for 2014–2015 [13]. G, Severe acute respiratory syndrome coronavirus 2 pandemic. Cases presented here are counted through January 2021. This virus is zoonotic in origin [18].