Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2020 Jul 1;85:104433. doi: 10.1016/j.meegid.2020.104433

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2020 Elsevier B.V. All rights reserved.

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.

PMC Copyright notice

Fig. 1 — Phylogenetic analysis of IBV viruses within genotype GI-23 based on partial (a) and full (b) S1-gene sequences. The phyologenetic tree was generated using Maximum likelihood analysis for the partial S1 gene (290 nucleotides) including partial HVR3. Marked are reference strain for IS variant 2 viruses (), Egyptian variant 1 () and Egyptian variant 2 (). Prototype viruses used throughout the study include 2 EGY-var2 - () and 2 EGY-var1-strains (). Virus from the small broiler flock (NR 725/16) and four additional viruses from the year 2016 are marked in red(A). In addition, the nucleotide distances between NR725/16 and related sequences in the gene bank are given (B). Phylogenetic analysis based on full S1 gene (1610 Nucleotide) resulted in establishing three sub-clades (GI-23.1, −23.2.1 and −23.2.2) (C). Viruses with full genome sequences in the study are highlighted in red. Distances between the proposed sub-clades are given below (D). Names include the genotype according to S1 gene, followed by accession number, species the virus was detected from with abbreviation for chicken (ck), country code according ISO 3166-1 alpha-3, laboratory identification number and year of publication.

Phylogenetic analysis of IBV viruses within genotype GI-23 based on partial (a) and full (b) S1-gene sequences. The phyologenetic tree was generated using Maximum likelihood analysis for the partial S1 gene (290 nucleotides) including partial HVR3. Marked are reference strain for IS variant 2 viruses (), Egyptian variant 1 () and Egyptian variant 2 (). Prototype viruses used throughout the study include 2 EGY-var2 - () and 2 EGY-var1-strains (). Virus from the small broiler flock (NR 725/16) and four additional viruses from the year 2016 are marked in red(A). In addition, the nucleotide distances between NR725/16 and related sequences in the gene bank are given (B). Phylogenetic analysis based on full S1 gene (1610 Nucleotide) resulted in establishing three sub-clades (GI-23.1, −23.2.1 and −23.2.2) (C). Viruses with full genome sequences in the study are highlighted in red. Distances between the proposed sub-clades are given below (D). Names include the genotype according to S1 gene, followed by accession number, species the virus was detected from with abbreviation for chicken (ck), country code according ISO 3166-1 alpha-3, laboratory identification number and year of publication.