Influenza vaccine formulations for intradermal delivery

A - Human Necessities – 61 – K

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Details

A61K 39/145 (2006.01) C12N 7/04 (2006.01) C12N 7/06 (2006.01)

Patent

CA 2438960

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 for instance a detergent such as sodim deoxycholate in a density gradient centrifugation step; (vi) filtration to remove undesired materials; wherein the steps are performed in that outer but not necessarily consecutively.

Cette invention se rapporte à l'utilisation d'une préparation antigénique contre la grippe qui peut être obtenue par le procédé suivant, dans la fabrication d'un vaccin intradermique contre la grippe, ce procédé consistant: (i) à recueillir d'une culture une substance contenant le virus; (ii) à clarifier la substance ainsi cultivée pour en éliminer les substances non virales; (iii) à concentrer le virus recueilli; (iv) dans une étape ultérieure, à séparer le virus entier de la substance non virale; (v) à scinder le virus entier en utilisant un agent scindant approprié, par exemple un détergent tel que du désoxycholate de sodium, dans une étape de centrifugation à gradient de densité; (vi) et à procéder à une opération de filtration pour éliminer des substances indésirées; ces étapes étant effectuées dans cet ordre mais pas nécessairement de façon consécutive.

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