Infectious Bronchitis Virus - Phylogenetic tree
Phylogenetic tree comparing the relatedness of the sequence of the S1 part of the spike glycoprotein of IB variants from USA and other parts of the world.
KeyConn= Connecticut, Fla=Florida, H120= Holland, Mass= Massachusetts, Beau= Beaudette, Variant 1 and Variant 2 are from Israel, CAV= California variant, Ark= Arkansas, CU-T2= Cornell University, GAV= Georgia variant, D274, D207, and D1466= Dutch isolates, UK/167/84= United Kingdom isolate, DE072= Delaware isolate.
As a general rule, isolates less than 89% similar are different serotypes, with the exception that Conn 46 and Fla 18288 are 96% similar but are different serotypes, indicating that only a few changes in the right place are required to change the serotype.
Numbers denote percent similarity.
Phylogenetic tree provided by Dr. Mark Jackwood
