NOVEL VACCINE

摘要

The invention relates to the use of an influenza antigen preparation obtainable by the following process, in the manufacture of an intradermal flu vaccine: (i) harvesting of virus-containing material from a culture; (ii) clarification of the harvested material to remove non-virus material; (iii) concentration of the harvested virus; (iv) a further step to separate whole virus from non-virus material; (v) splitting of the whole virus using a suitable splitting agent in a density gradient centrifugation step; (vi) filtration to remove undesired materials; wherein the steps are performed in that order but not necessarily consecutively.