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. 2023 Feb 6;7(2):e109–e111. doi: 10.1016/S2542-5196(23)00002-5

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© 2023 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 license

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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One Health and planetary health research trends, topics, and global distribution

(A) One Health and planetary health publications relative to the total number of publications indexed in the Web of Science per year (per 100 000). (B) Keyword co-occurrence network graph of One Health and planetary health research topics (created with Vosviewer, version 1.6.17). The size of the nodes represents the number of publications in which a keyword occurs. The closer the nodes to each other, the stronger the link between the keywords. The keywords are grouped in clusters depending on their inter-relation, and these clusters are represented with different colours. (C) Geographical distribution of institutions active in One Health (left panel) and planetary health (right panel) research in 2020 and 2021 by urban areas (created with Netscity). The counting method is normalised number of publications (agglomeration): the maximum value is 47·14 and minimum value is 0·04 for One Health; and the maximum value is 22·78 and minimum value is 0·04 for planetary health.