S6P mutation in Delta and Omicron variant spike protein significantly enhances the efficacy of mRNA COVID-19 vaccines - Bong, Yong-Sik; Brown, David; Chung, Ezra; Ananthaswamy, Neeti; Chen, Renxiang; Lewoczko, Evan; Sabbers, William; Patterson-Orazem, Athéna C.; Dorsey, Zachary; Zou, Yiqing; Yu, Xue; Liang, Jiening; et al. (Frontiers in Immunology, 2025)