Validation of an infectious bronchitis virus GVIII-specific RT-PCR assay and first detection of IB80-like strains (lineage GVIII-2) in Italy
2024

Detection of Infectious Bronchitis Virus Strains in Italy

Sample size: 84 publication 10 minutes Evidence: moderate

Author Information

Author(s): Legnardi Matteo, Poletto Francesca, Franzo Giovanni, Harper Valeria, Bianco Luca, Andolfatto Cristina, Blanco Angela, Biarnés Mar, Ramon Laura, Cecchinato Mattia, Tucciarone Claudia Maria

Primary Institution: University of Padua, Padua, Italy

Hypothesis

Can a GVIII-specific RT-PCR assay effectively detect IB80-like strains in layer farms in Italy?

Conclusion

The study successfully identified the circulation of GVIII-2 strains in Italy for the first time.

Supporting Evidence

  • 11 out of 84 flocks tested positive for GVIII-2 strains.
  • Phylogenetic analysis showed all Italian strains clustered together.
  • Reproductive signs were reported in one farm and respiratory signs in another.

Takeaway

Researchers created a test to find a specific virus in chickens and found it in several farms in Italy.

Methodology

An in-house RT-PCR assay was developed and validated to detect GVIII strains in samples from layer farms.

Potential Biases

Potential bias due to convenience sampling and reliance on clinical signs for sample collection.

Limitations

The survey was based on convenience sampling, which may not represent the entire population.

Participant Demographics

Samples were collected from layer farms across various regions in Italy.

Digital Object Identifier (DOI)

10.3389/fvets.2024.1514760

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