Epidemiology investigation
Post-marketing evaluation of the effectiveness and safety of a varicella attenuated live vaccine in China
Haiping Chen, Xiaoqin Liu, Hongjie Shen, Fubao Ma, Lizhi Song, Chi Zhang, Xinliang Shen, Qinyuan Guo, Bin Xu, Linyun Luo
Published 2016-08-31
Cite as Chin J Microbiol Immunol, 2016, 36(8): 600-604. DOI: 10.3760/cma.j.issn.0254-5101.2016.08.009
Abstract
ObjectiveTo evaluate the effectiveness and safety of varicella attenuated live vaccine (VarV) produced by A Co. Ltd.
MethodsWe selected 3 provinces in China and enrolled 15 002 children aged 3-<11 in this random, multicenter study. Participants were randomly divided into two groups: the experimental group and the control group. Every varicella case was collected and recorded to calculate the vaccine efficacy. Vaccine safety was assessed by means of spontaneous report and regular follow-up visits.
ResultsDuring the observation period, the incidence of varicella was 0.147% in the experimental group and 1.155% in the control group (P<0.001). The vaccine efficacy was 87.27%. The adverse reaction rate after vaccination was lower than the rates reported in other literatures.
ConclusionThe VarV produced by A Co., Ltd. in China was effective and safe in preventing varicella.
Key words:
Varicella attenuated live vaccine; Multicenter study; Vaccine efficacy; Vaccine safety
Contributor Information
Haiping Chen
China National Biotec Group Company Limited, Beijing 100029, China
Xiaoqin Liu
China National Biotec Group Company Limited, Beijing 100029, China
Hongjie Shen
China National Biotec Group Company Limited, Beijing 100029, China
Changchun Keygen Biological Products Co., Ltd., Changchun 130062, China
Fubao Ma
Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
Lizhi Song
Shandong Center for Disease Control and Prevention, Jinan 250014, China
Chi Zhang
Hubei Provincial Center for Disease Control and Prevention, Wuhan 430079, China
Xinliang Shen
China National Biotec Group Company Limited, Beijing 100029, China
Qinyuan Guo
Changchun Keygen Biological Products Co., Ltd., Changchun 130062, China
Bin Xu
China National Biotec Group Company Limited, Beijing 100029, China
Linyun Luo
China National Biotec Group Company Limited, Beijing 100029, China