A single dose of an adenovirus-vectored vaccine provides protection against SARS-CoV-2 challenge
Shipo Wu, Gongxun Zhong, Jun Zhang, Lei Shuai, Zhe Zhang, Zhiyuan Wen, Busen Wang, Zhenghao Zhao, Xiaohong Song, Yi Chen, Renqiang Liu, Ling Fu, Jinlong Zhang, Qiang Guo, Chong Wang, Yilong Yang, Ting Fang, Peng Lv, Jinliang Wang, Junjie Xu, Jianmin Li, Changming Yu, Lihua Hou, Zhigao Bu & Wei Chen
Nature Communications volume 11, Article number: 4081 (2020)
Abstract
The unprecedented coronavirus disease 2019 (COVID-19) epidemic has created a worldwide public health emergency, and there is an urgent need to develop an effective vaccine to control this severe infectious disease. Here, we find that a single vaccination with a replication-defective human type 5 adenovirus encoding the SARS-CoV-2 spike protein (Ad5-nCoV) protect mice completely against mouse-adapted SARS-CoV-2 infection in the upper and lower respiratory tracts. Additionally, a single vaccination with Ad5-nCoV protects ferrets from wild-type SARS-CoV-2 infection in the upper respiratory tract. This study suggests that the mucosal vaccination may provide a desirable protective efficacy and this delivery mode is worth further investigation in human clinical trials.