Influenza virus and process of producing a vaccine therefrom

摘要

The invention relates to a novel influenza virus strain and to the influenza virus vaccine containing said strain. The new strain, which is the CNCM N DEG I-099 strain, is prepared by recombination of the influenza A/PR/8/34 virus strain with the influenza A/California/10/78 (CNCM N DEG I-098) virus strain. The vaccine is prepared by allowing the CNCM N DEG I-099 strain to grow in the allantoic cavity of fertile hen's eggs, harvesting and freeze-drying the yielded virus material. The strain and the vaccine deriving therefrom are valuable for the immunization against influenza caused by influenza type A (H1N1) virus strains.