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What is the difference between seasonal flu vaccine and the new H1N1 flu vaccine?

April 26, 2017difference flu h1n1 seasonal vaccine

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What is the difference between seasonal flu vaccine and the new H1N1 flu vaccine?

1 Answer

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H1N1 vaccine is made from the novel H1N1 virus only. This year’s seasonal flu vaccine was manufactured from three seasonal influenza viruses – one influenza A (H3N2) virus, one seasonal influenza (H1N1) virus (different from the new swine flu strain) and one influenza B virus.