Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2022 Aug 8;10:939053. doi: 10.3389/fpubh.2022.939053

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2022 Xia, Yao, Zhao, Tao, Zheng, Zhou, Yao and Song.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

PMC Copyright notice

Cluster analysis plot of references for co-citation. Top 139 articles cited at least 50 times were analyzed by VOSviewer. (A) Each circle in the figure represented a reference of co-citation, and the circle size was proportional to the number of citations. All references were divided into 3 clusters according to their contents: clinical studies on COVID-19 (red), basic research on SARS-CoV-2 (blue), and the cellular and molecular basis of immune-related pathogenesis for COVID-19 disease (green). (B) The thermodynamic chart of references. All references of co-citation were colored difference according to their citations. References with the highest number of citations were marked in red.