First characterization of a Middle-East GI-23 lineage (Var2-like) of infectious bronchitis virus in Europe

•Infectious bronchitis virus (IBV) of GI-23 lineage was prevalent for nearly 20 years only in countries of the Middle East.•This is the first detection and genetic characterization of the GI-23 IBV in Poland.•Complete sequence of Polish GI-23 IBV was phylogenetically distinct from all of the full-le...

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