In ovo protection against infectious bronchitis

Details In ovo protection against infectious bronchitis In ovo protection against infectious bronchitis

A - Human Necessities

61

K

A61K 39/215 (2006.01)

Patent

CA 2401145

The present invention is directed to processes and compositions for protecting host animals (e.g., chickens) from exposure to virulent infectious bronchitis virus. In ovo administration of live, avirulent strains of IB at appropriate dosage levels on a per egg basis provides an effective and efficient vaccination having acceptable safety and efficacy features.

La présente invention concerne des méthodes et des compositions destinées à protéger des animaux hôtes (par exemple, les poussins) contre toute exposition au virus virulent de la bronchite infectieuse. L'administration In ovo, oeuf par oeuf, de souches vivantes avirulentes de la bronchite infectieuse, à des niveaux de dose appropriés, assure une vaccination efficace à caractéristiques de sécurité et d'efficacité acceptables.

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