The emergence of novel sparrow deltacoronaviruses in the United States more closely related to porcine deltacoronaviruses than sparrow deltacoronavirus HKU17
Qi Chen, Leyi Wang, Chenghuai Yang, Ying Zheng, Phillip C. Gauger, Tavis Anderson, Karen M. Harmon, Jianqiang Zhang, Kyoung-Jin Yoon, Rodger G. Main & Ganwu Li 
Emerging Microbes & Infections volume 7,Article number: 105 (2018) 

网址：
https://www.nature.com/articles/s41426-018-0108-z