Effectiveness of a pay-it-forward intervention compared with user-paid vaccination to improve influenza vaccine uptake and community engagement among children and older adults in China: a quasi-experimental pragmatic trial

Authors: Wu, Dan ^{*, *}, Jin, Chenqi ^*, Bessame, Khaoula, Tang, Fanny Fong-Yi, Ong, Jason J, Wang, Zaisheng, Xie, Yewei, Jit, Mark, Larson, Heidi J, Chantler, Tracey, Lin, Leesa, Gong, Wenfeng, Yang, Fan, Jing, Fengshi, Wei, Shufang, Cheng, Weibin, Zhou, Yi, Ren, Nina, Qiu, Shuhao, Bao, Jianmin, Wen, Liufen, Yang, Qinlu, Tian, Junzhang, Tang, Weiming ^**, Tucker, Joseph D

Source: In The Lancet Infectious Diseases October 2022 22(10):1484-1492