Correction: Government livelihood project - free influenza vaccination for the older population in China: the example of Zhejiang Province - Xiaoxiao Wang; Xiaoxiao Wang; Wei Jiang; Zhao Yu; Weiping Jiang; Xiaowei Zhu; Zhen Wang; Jimin Sun; Jimin Sun; Hangjie Zhang; Hangjie Zhang (Frontiers in Public Health, 2025)