Abstract
A coronavirus was isolated in an infectious bronchitis (IB) vaccinated (Massachusetts strain) layer flock showing severe IB-like clinical signs. The isolate is antigenically different from the Massachusetts and the Connecticut serotypes and from the four “variant” serotypes isolated by the Doom Institute in Holland. The disease was reproduced in chickens and layers. Respiratory signs were severe in both groups. In layers, egg drop was intense and long-lasting. The eventual development of a suitable medical prophylaxy is discussed.
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CITATION STYLE
Picault, J. P., Bennejean, G., Drouin, P., Guittet, M., Protais, J., L’Hospitalier, R., … Le Bachelier, A. (1986). A New Pathogenic Avian Infectious Bronchitis Virus Isolated in France. In Acute Virus Infections of Poultry (pp. 122–127). Springer Netherlands. https://doi.org/10.1007/978-94-009-4287-5_12
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