a Keyword co-occurrence network graph of COVID-19 research topics. Red cluster: Health and pandemic management; Green cluster: The disease and its pathophysiology; Blue cluster: Clinical epidemiology of the disease; Yellow cluster: Treatment of the disease. Size of circle shows the relative number of occurrences of a keyword, and weight of line indicates the frequency two keywords are linked. To view all the links, you can access the interactive map using the Map and Network files found at OSF: https://osf.io/54gqw/ and the VOSviewer software. We used the VOSviewer version 1.6.14. To view keyword analysis from other time periods, please see https://covid19biblio.com/keyword-co-occurrence/. b A Section of (a), keyword co-occurrence network graph of COVID-19 research topics. Displayed in the interactive tool, where “pneumonia” is selected to show other major keywords it is researched together with. The figure also shows that in addition to linking with keywords within its own cluster, the keyword “pneumonia” links with topics in the other clusters
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