Correction: Assessing the Impact of Frailty on Infection Risk in Older Adults: Prospective Observational Cohort Study - Ya Yang; Kechun Che; Jiayan Deng; Xinming Tang; Wenyuan Jing; Xiuping He; Jiacheng Yang; Wenya Zhang; Mingjuan Yin; Congcong Pan; Xiaoling Huang; Zewu Zhang; et al. (JMIR Public Health and Surveillance)