Abstract：
:Variants assigned to GI-23 lineage of infectious bronchitis virus (IBV), formerly called Var2, have circulated for nearly 20 years only in countries of the Middle East. Strains of this lineage were first identified in Israel in 1998. More severe form of the virus appeared in 2006, when the second wave of Var2 epidemic has spread over the Middle East region. The present study describes the detection and detailed genetic characterization of the GI-23 viruses in Poland. The full-length genome of gammaCoV/Ck/Poland/G052/2016 strain consists of 27596 nucleotides and has typical organization for IBV (UTR5'-POl-S-3a-3b-E-M-4b-4c-5a-5b-N-UTR3'). The phylogenetic analysis of the complete sequence showed that it formed separate branch distinct from all of the full-length genome sequences analyzed in this study. Recombination analyses with other gammacoronaviruses revealed that Polish GI-23 strain may originate from recombination events and potential donors of build-in sequences are IBV of GI-1, GI-13 and G-19 lineages (Mass-, 793B- and QX-like strains, respectively). The 1a, 1b and N genes were involved in these recombination events. The source of virus introduction to the chicken population in Poland is unknown.
journal_name
Virus Resjournal_title
Virus researchauthors
Lisowska A,Sajewicz-Krukowska J,Fusaro A,Pikula A,Domanska-Blicharz Kdoi
10.1016/j.virusres.2017.09.010subject
Has Abstractpub_date
2017-10-15 00:00:00pages
43-48eissn
0168-1702issn
1872-7492pii
S0168-1702(17)30496-3journal_volume
242pub_type
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