The US Food and Drug Administration (FDA) has approved a new 4-strain seasonal flu vaccine from GlaxoSmithKline plc (GSK), the company announced on Monday. Fluarix Quadrivalent is approved for use in adults, plus children aged 3 and over, to protect them from disease caused by influenza virus subtypes A and B contained in the vaccine. It is the first intramuscular vaccine to protect against four strains of seasonal influenza virus, says GSK. The vaccine is not approved or licensed for use in any other country...
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