Isolation, propagation, genome analysis and epidemiology of HKU1 betacoronaviruses Samuel R. Dominguez,1,23 Susmita Shrivastava,33 Andrew Berglund,1 Zhaohui Qian,1 Luiz Gustavo Bentim Go´es,4,5 Rebecca A. Halpin,3 Nadia Fedorova,3 Amy Ransier,3 Philip A. Weston,1 Edison Luiz Durigon,4,5 Jose´ Antonio Jerez,4,6 Christine C. Robinson,7 Christopher D. Town3 and Kathryn V. Holmes2 Correspondence Samuel R. Dominguez