Genotyping of avian infectious bronchitis virus in Iran: Detection of D274 and changing in the genotypes rate
Autor: | Peyman Mohammadi, Amir Modiri Hamdan, Zahra Ziafati, Arash Ghalyanchilangeroudi, Hossein Hosseini, Mohammad Hossein Fallah Mehrabadi, Seyed Ali Ghafouri, Reza Esmaeelzadeh Dizaji |
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Rok vydání: | 2019 |
Předmět: |
Veterinary medicine
animal diseases Spike Iran medicine.disease_cause 0403 veterinary science 0302 clinical medicine Genotype Prevalence Immunology and Allergy Phylogeny Coronavirus Phylogenetic analysis biology Phylogenetic tree D274 04 agricultural and veterinary sciences General Medicine Poultry farming Vaccination Trachea Infectious Diseases Avian infectious bronchitis virus population characteristics Coronavirus Infections geographic locations animal structures Farms 040301 veterinary sciences 030231 tropical medicine Immunology education Infectious bronchitis virus Microbiology Article 03 medical and health sciences parasitic diseases medicine Animals Genotyping Poultry Diseases General Veterinary business.industry social sciences biology.organism_classification Flock business Chickens |
Zdroj: | Comparative Immunology, Microbiology and Infectious Diseases |
ISSN: | 1878-1667 |
Popis: | Highlights • An updating data about avian infectious bronchitis genotypes circulating in Iran. • First detection of D274 genotype in Iran. The coronavirus avian Infectious bronchitis virus (IBV) poses economic threats to poultry farms worldwide, affecting the performance of both meat-type and egg-laying birds. To define the evolution of recent IBVs in Iran, a genetic analysis based on hypervariable nucleotide sequences of S1 gene was carried out. Tracheal swab samples were collected from 170 Broiler flocks during 2017. Ten tracheal swabs from each flock pooled. From a total number of 170 flocks tested, 84.71% found to be positive. Phylogenetic tree analysis revealed the presence of D274 as a first time in Iran. IS/1494/06 was showed to be dominant IBV type circulating in broiler farms with a significantly higher prevalence than other four genotypes. Considering fluctuations in QX-type prevalence in recent years, continuous monitoring is necessary to reduce economic consequences in layer and broiler farms. The findings highlight the importance of using modified vaccination strategies that are adapted to the changing disease scenario. |
Databáze: | OpenAIRE |
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