Bibliographical noteFunding Information:
I thank Editor Jian Wu for inviting me to contribute an opinion paper, and I am grateful to the anonymous reviewers for their helpful comments. I have enjoyed working with my research team of young scholars, who participated in collections of survey and online data for testing the broader implications of the new concept epidemic-specific social capital, which include variables on physical activity and perceived health status. They are Xiaoxian Guo, Xiaolin Lu, Xulei Ma, and Xiaolei Miao, all at Institute for Empirical Social Science Research, Xi'an Jiaotong University. Finally, I am indebted to Peter Bian, Shenyang Guo, Xiaoxian Guo, and Yaojun Li for their useful comments and edits on an early draft of this paper, and to Lei Zhang for his technical assistance with the making of figure files. The author declares that he has no competing interests.