I've seen reports saying that this year's vaccine may only be 20-30% effective (or thereabouts).
Would this be the data just for the killed-virus injection vaccine?
Is the nasal spray vaccine more effective?
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Flu vaccine - is there a difference in effectiveness between the live nasal spray vaccine and the killed-virus vaccine?
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10FingersOnTheFender · 14/01/2018 16:39
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