[New Castle disease in imported birds. Cases observed and experimental vaccination (author's transl)].

An acute, highly virulent form of Newcastle disease is frequently observed in imported birds. Particularly parrots and, in some cases, pheasants are a potential source of danger. Diseased birds are imported from Asia as well as from South America. Outbreaks among birds imported from Africa have not so far been observed. The number of shipments in which Newcastle disease was found to be present in the birds is reviewed. Moreover, experimental vaccination is discussed.