PROCEDIMIENTO PARA LA PREPARACION DE UNA VACUNA PARA PROTEGER LAS AVES PONEDORAS DE HUEVO CONTRA LA CAIDA REPENTINA DE LOS HUEVOS

摘要

There are disclosed novel vaccines for immunizing egg-laying birds against Egg Drop disease, a group of novel viruses (generically called EDS 76 virus) used in the preparation of such vaccines, and methods for immunizing egg-laying birds against Egg Drop disease or syndrome.