Financial support. This work was supported by the Chinese National Major Project for Infectious Diseases Control (No. 2014ZX10004005), National Science and Technology Major Project for Control and Prevention of Major Infectious Diseases of China (2017ZX10103004).
Potential conflicts of interest. All authors: No reported conflicts.
Acknowledgments: LW and XL conceived of the project and performed the analysis; LW, SL, and JZ collected the data; LW and QZ did the experiments; LW drafted the paper, and all authors critically revised the manuscript; XL takes full responsibility for the data and analysis.
We appreciate all the clinicians and nurses who participated in treating the patients with viral CAP.