NOVEL PROCESS FOR THE PRODUCTION OF VACCINES HAVING A HIGH TITLE OF VIRUSES AND HIGHLY PURIFIED VACCINES, A HIGH TITLE OF VIRUSES, SO OBTAINED

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. IMAGE