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AstraZeneca PLC Announces Fluenz Tetra, Four-Strain Nasal Spray Vaccine, Receives Positive Opinion In EU From Chmp For The Prevention Of Seasonal Influenza In Children

Friday, 20 Sep 2013 07:59am EDT 

AstraZeneca PLC announced that the Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EMA) has issued a positive opinion on Fluenz Tetra, a nasally administered four-strain live attenuated influenza vaccine, for the prevention of seasonal influenza in eligible children and adolescents 24 months to 17 years of age. Historically, seasonal flu vaccines have contained three strains of influenza: one influenza A (H1N1) virus, one influenza A (H3N2) virus, and one influenza B virus. However, Fluenz Tetra contains two strains of influenza A and two strains of influenza B to provide broad protection against influenza B. Influenza B strains on average account for approximately 25% of the influenza strains that circulate in Europe. The positive opinion was reached after a review of data from a pivotal paediatric study. These data indicated that the safety and immunogenicity profile of Fluenz Tetra was comparable to currently approved three-strain (trivalent) vaccine, Fluenz. The CHMP's positive opinion on Fluenz Tetra will now be reviewed by the European Commission, which has the authority to approve medicines for the European Union. Should the EC approve Fluenz Tetra, it will replace Fluenz from the 2014-2015 flu season onwards.