Effectiveness of pay it forward intervention compared to free and user-paid vaccinations on seasonal influenza vaccination among older adults across seven cities in China: study protocol of a three-arm cluster randomized controlled trial

Effectiveness of pay it forward intervention compared to free and user-paid vaccinations on seasonal influenza vaccination among older adults across seven cities in China: study protocol of a three-arm cluster randomized controlled trial

Abstract Background Seasonal influenza poses an enormous burden worldwide, with older adults facing preventable morbidity and mortality. However, seasonal influenza vaccination coverage is poor among older populations in China. Pay-it-forward (giving a person a free vaccine and an opportunity to don...

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Main Authors: Qing-Qing Li, Zizhen Huang, Jiangyun Chen, Junjie Wang, Duqiao Li, Xiaoshan Chen, Qing Zhao, Siyuan Liu, Wenjun He, Huanyuan Luo, Yuting Wan, Guangyu Tong, Dexing Zhang, Yiyuan Cai, Huijuan Liang, Dan Wu, David Bishai, Dong Roman Xu
Format: Article
Language:English
Published: BMC 2025-07-01
Series:BMC Public Health
Subjects:
Older adults
Influenza vaccine
Pay it forward
Free vaccination
Cluster randomized controlled trial (RCT)
Online Access:https://doi.org/10.1186/s12889-025-23301-2
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