viruses Review From SARS to MERS, Thrusting Coronaviruses into the Spotlight Zhiqi Song 1,2,3, Yanfeng Xu 1,2,3, Linlin Bao 1,2,3, Ling Zhang 1,2,3, Pin Yu 1,2,3, Yajin Qu 1,2,3, Hua Zhu 1,2,3, Wenjie Zhao 1,2,3, Yunlin Han 1,2,3 and Chuan Qin 1,2,3,* 1 Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) & Comparative Medicine Centre, Peking Union Medical Collage (PUMC), Beijing 100021, China;