Efficacy of a locally produced, Chinese Vi polysaccharide typhoid fever vaccine during six years of follow-up von Acosta, Camilo J., Hong-hui, Yang, Ning, Wang, Qion, Gao, Qun, Deng, Xiaolei, Ma, Baode, Zhou, Liu, Wei, Danovaro-Holliday, M. Carolina, Ochiai, R. Leon, Wang, Xuan-yi, Kim, Deok-ryun, Zhi-Yi, Xu, Bai-qing, Dong, Galindo, Claudia M., Clemens, John D.

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