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
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