By Mia De Graaf Health Editor For Dailymail.com
Published: 16:44 GMT, 19 February 2019 | Updated: 16:44 GMT, 19 February 2019
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Scientists have identified a key reason why vaccines fail in elderly people - paving the way to better shots.
Older people are the most complicated demographic when it comes to flu.
In theory, they should be more resilient because the more flu you're exposed to, the more intelligent your immune system is - it can recognize more enemies, and immediately be on the defensive.
But data show consistently that the elderly are more likely to die of influenza than any other group, including flu-naive children.
Now, a team at the University of Chicago has found a new piece of the puzzle that is essential to building a universal flu vaccine - something Congress has invested $1 billion in.
A team at the University of Chicago has answered a question that has puzzled many for years: why are the elderly more likely to die when their immune systems are 'wiser' than anyone else's?
'The major implication is when a newly circulating influenza virus infects elderly individuals, they don't have
