ArticleViruses2023
Evolution and Epidemic Spread of the Avian Infectious Bronchitis Virus (IBV) GI-23 in Brazil.
Article in Viruses, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
7 citing papers in PubMed.
- Global transmission pathways and adaptive molecular evolution of avian infectious bronchitis GI-23 (Variant 2).Scientific reports · 2026Article
- Phylodynamic and phylogeographic reconstruction of IBV lineages: diverse paths and determinants, one goal for control.Scientific reports · 2025Article
- Emergence and Dissemination of the Avian Infectious Bronchitis Virus Lineages in Poultry Farms in South America.Veterinary sciences · 2025Review
- Infectious Bronchitis Virus (IBV) in Vaccinated and Non-Vaccinated Broilers in Brazil: Surveillance and Persistence of Vaccine Viruses.Microorganisms · 2025Article
- Article
- Molecular and Serological Investigation of Infectious Bronchitis Virus in the East Shewa, Central Ethiopia.Veterinary medicine (Auckland, N.Z.) · 2024Article
- Global Emergence of Infectious Bronchitis Virus Variants: Evolution, Immunity, and Vaccination Challenges.Transboundary and emerging diseases · 2023Review
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Infectious bronchitis virus (IBV) is a pathogen affecting poultry flocks worldwide. GI-23 is an IBV lineage with a rapid spread into different continents of the world, and it was reported for the first time in South American/Brazilian broiler farms last year. This study aimed to investigate the recent introduction and epidemic spread of IBV GI-23 in Brazil. Ninety-four broiler flocks infected with this lineage were evaluated from October 2021 to January 2023. IBV GI-23 was detected using real-time RT-qPCR, and the S1 gene hypervariable regions 1 and 2 (HVR1/2) were sequenced. S1 complete and HVR1/2 nucleotide sequence datasets were used to carry out phylogenetic and phylodynamic analyses. Brazilian IBV GI-23 strains clustered into two specific subclades (SA.1 and SA.2), both in tree branches with IBV GI-23 from Eastern European poultry-producing countries, suggesting two independent and recent introductions (around 2018). Viral phylodynamic analysis showed that the IBV GI-23 population increased from 2020 to 2021, remaining constant for one year and declining in 2022. S1 amino acid sequences from Brazilian IBV GI-23 presented specific and characteristic substitutions in the HVR1/2 for subclades IBV GI-23 SA.1 and SA.2. This study brings new insights into the introduction and recent epidemiology of IBV GI-23 in Brazil.
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