What is the difference between the seasonal influenza vaccine and the pandemic vaccine against influenza A (H1N1)v?
The seasonal influenza vaccine is a trivalent inactivated virus, containing 15 micrograms haemagglutinin per strain per 0.5 mL dose. It is non-adjuvanted. The vaccine complies with the annual strain recommendation from the WHO. The pandemic vaccine against influenza A (H1N1)v is a split inactivated vaccine containing 3.75 micrograms haemagglutinin of a monovalent antigen per 0.5 mL dose. The vaccine also contains an adjuvant designed to stimulate a stronger and potentially broader immune response.
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