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. 2019 Dec 11;89(3):439–446. doi: 10.3382/ps.2009-00322

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© 2010 Poultry Science Association Inc.

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

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Phylogenetic analysis of the nucleotide sequences of the whole spike glycoprotein 1 (S1) gene from the infectious bronchitis virus isolates recovered in this study (●). The phylogenetic trees were constructed using MEGA version 4.0 by the neighbor-joining method (bootstrapping for 1,000 replicates, bootstrap value >70%). TW-I = Taiwan group I; TW-II = Taiwan group II; Mass = Massachusetts. Color version available in the online PDF.