Corrigendum: Identifying risk factors for secondary infection post-SARS-COV-2 infection in patients with severe and critical COVID-19 - Guo, Mingquan; Gao, Menglu; Gao, Jing; Zhang, Tengfei; Jin, Xin; Fan, Jian; Wang, Qianying; Li, Xin; Chen, Jian; Zhu, Zhaoqin (Frontiers in Immunology, 2025)