It's important if you're old or if you're young; but, if you're in between it's not so much important as it is convienient to avoid the actual flu. I never get one. I'm so rarely sick and I'm so practically OCD with the hand washing that if I were to get the flu I'd be more distraught over the "OMG, when did I mess up on the hand washing?" than over actually being sick.
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