The impact of EV71 vaccination program on hand,foot and mouth disease in Zhejiang Province,China:A negative control study  

作　　者：Dashan Zheng Lingzhi Shen Wanqi Wen Feng Ling Ziping Miao Jimin Sun Hualiang Lin 

机构地区：[1]Department of Epidemiology,School of Public Health,Sun Yat-sen University,Guangzhou,Guangdong,510080,China [2]Zhejiang Provincial Center for Disease Control and Prevention,Hangzhou,Zhejiang,310051,China

出　　处：《Infectious Disease Modelling》2023年第4期1088-1096,共9页传染病建模（英文）

基　　金：supported the grants from National Key R&D Program of China (2022YFC2305305);by grants from consultancy project (2022-JB-06)by the Chinese Academy of Engineering (CAE);the Bill&Melinda Gates Foundation[Grant Number:INV-016826].

摘　　要：Objective:To estimate the potential causal impact of Enterovirus A71(EV71)vaccination program on the reduction of EV71-infected hand,foot,and mouth disease(HFMD)in Zhejiang Province.Methods:We utilized the longitudinal surveillance dataset of HFMD and EV71 vaccination in Zhejiang Province during 2010-2019.We estimated vaccine efficacy using a Bayesian structured time series(BSTS)model,and employed a negative control outcome(NCO)model to detect unmeasured confounding and reveal potential causal association.Results:We estimated that 20,132 EV71 cases(95%CI:16,733,23,532)were prevented by vaccination program during 2017-2019,corresponding to a reduction of 29%(95%CI:24%,34%).The effectiveness of vaccination increased annually,with reductions of 11%(95%CI:6%,16%)in 2017 and 66%(95%CI:61%,71%)in 2019.Children under 5 years old obtained greater benefits compared to those over 5 years.Cities with higher vaccination coverage experienced a sharper EV71 reduction compared to those with lower coverage.The NCO model detected no confounding factors in the association between vaccination and EV71 cases reduction.

关 键 词：Hand foot and mouth disease(HFMD) Bayesian structure time series model Enterovirus A71(EV71)vaccine Negative control outcome 

分 类 号：R512.5[医药卫生—内科学] R186[医药卫生—临床医学]