The Medical Letter on Drugs and Therapeutics
Influenza Vaccine for 2016-2017
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10/19/16: A sentence regarding Flublok Quadrivalent has been added to the "Quadrivalent vs Trivalent" section.
12/7/16: In Table 2, the recommended age in for FluLaval Quadrivalent was changed to ≥6 months (from ≥3 years).

Annual vaccination against influenza A and B viruses is recommended for everyone ≥6 months old without a specific contraindication.1

EFFECTIVENESS — The effectiveness of seasonal influenza vaccine in preventing influenza illness depends on the match between the vaccine and circulating strains. Vaccine effectiveness is highest (50-60%) when the match is close, but even when the match is poor, vaccination has been shown to reduce the risk of laboratory-confirmed influenza, hospitalization for influenza, and death.2,3 For the 2015-2016 influenza season, the adjusted overall effectiveness of the seasonal influenza vaccine against influenza A and B viruses was 47%.4

Quadrivalent vs Trivalent – All of the trivalent and quadrivalent seasonal influenza vaccines available in the ... more      

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Title: Influenza Vaccine for 2016-2017
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