Avian infectious bronchitis: cross-protection studies using different Australian subtypes
| Autor: | J. T. Faragher, Liliana Endo-Munoz |
|---|---|
| Rok vydání: | 1989 |
| Předmět: |
Coronaviridae
Coronaviridae Infections Infectious bronchitis virus Cross Reactions Antibodies Viral Humoral antibody Animals Medicine Cilia Poultry Diseases General Veterinary biology business.industry Infectious bronchitis Ciliary activity Vaccination Viral Vaccines General Medicine Hemagglutination Inhibition Tests Avian infectious bronchitis biology.organism_classification Virology Specific Pathogen-Free Organisms Trachea Immunology business Chickens |
| Zdroj: | Australian Veterinary Journal. 66:345-348 |
| ISSN: | 1751-0813 0005-0423 |
| DOI: | 10.1111/j.1751-0813.1989.tb09728.x |
| Popis: | The cross-immunity of vaccinated chickens after challenge with some Australian infectious bronchitis viruses was assessed by humoral antibody responses and by ciliary activity in tracheal rings of vaccinated chickens following challenge. Four viruses were used for vaccination: Vac 3, Vac 4, both current infectious bronchitis vaccine viruses, and Q1/76 and N2/62. IBV N1/62 (synonym T0 and infectious bronchitis virus N9/74 (synonym Appin) were used to challenge the vaccinated chickens. Results showed a lack of correlation between humoral antibody levels and protection. Cross-immunity was found after vaccination with each subtype, but was lower for Vac 3 and Vac 4 than for Q1/76 and N2/62. |
| Databáze: | OpenAIRE |
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