Age-related immune response disparities between adults and children with severe COVID-19: a case–control study in China - Chen, Hongliang; Li, Yuan; Yuan, Liping; Liu, Fen; Sun, Qian; Luo, Qingkai; Lei, Yefei; Hou, Yinglan; Li, Jiayan; Cai, Liang; Tang, Shixing (Frontiers in Microbiology, 2025)