No abstract available
MeSH terms
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Animals
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Chickens*
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Coronavirus Infections / epidemiology
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Coronavirus Infections / pathology
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Coronavirus Infections / veterinary*
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Coronavirus Infections / virology
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Eggs / virology
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Infectious bronchitis virus / classification
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Infectious bronchitis virus / isolation & purification*
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Infectious bronchitis virus / pathogenicity
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Italy / epidemiology
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Poultry Diseases / epidemiology*
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Poultry Diseases / pathology
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Poultry Diseases / virology
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Serotyping / veterinary
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Specific Pathogen-Free Organisms