NOUVEAU PROCEDE DE PRODUCTION DE VACCINS PRESENTANT UN TITRE ELEVE DE VIRUS ET VACCINS TRES PURIFIES, A TITRE ELEVE DE VIRUS, AINSI OBTENUS

摘要

The invention relates to a new method for producing vaccines possessing a high titre of virus. In this method, the vaccines are obtained by culturing viruses on chick embryo cells. Application to the production of vaccines from viruses of the envelope type, such as Togaviridae, and especially the yellow fever virus and the measles and German measles viruses.