There's a brand new article in the British medical journal, The Lancet, this month, about the effectiveness of flu vaccines. The data show that, as we've always suspected, they're reasonably effective for kids, but not for older people.
The red emphasis is mine, of course.Interpretation
Influenza vaccines can provide moderate protection against virologically confirmed influenza, but such protection is greatly reduced or absent in some seasons. Evidence for protection in adults aged 65 years or older is lacking. LAIVs consistently show highest efficacy in young children (aged 6 months to 7 years). New vaccines with improved clinical efficacy and effectiveness are needed to further reduce influenza-related morbidity and mortality.
http://www.thelancet.com/journals/lanin ... X/abstract
Tex

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