AUTHOR=Tang Haijun , Gao Long , Wu Zhao , Meng Fang , Zhao Xin , Shao Yun , Shi Xiaohua , Qiao Shigang , An Jianzhong , Du Xiaohong , Qin F. Xiao-Feng TITLE=Corrigendum: Characterization of SARS-CoV-2 Variants N501Y.V1 and N501Y.V2 Spike on Viral Infectivity JOURNAL=Frontiers in Cellular and Infection Microbiology VOLUME=11 YEAR=2021 URL=https://www.frontiersin.org/journals/cellular-and-infection-microbiology/articles/10.3389/fcimb.2021.813645 DOI=10.3389/fcimb.2021.813645 ISSN=2235-2988