process for the production of a live attenuated panleucopenia virus or this attenuated virus vaccine containing a

摘要

A vaccine against panleucopenia is prepared by passing pathogenic panleucopenia virus first at least 80 times in cat kidney cells, then at least 18 times in permanent tissue cells of felidae or mustelidae, propagating the attenuated virus thus obtained on cat fetal cells and working it up to a vaccine.