Does the flu shot save lives? Various outlets report the vaccine may only be roughly 50% effective [0] which seems little more than a coin toss. They're pushed

Does the flu shot save lives? Various outlets report the vaccine may only be roughly 50% effective [0] which seems little more than a coin toss. They're pushed very hard in these drug stores, every time you check out, signs everywhere, plus the financial incentives. I wonder what the danger would be to a poor person to getting a flu shot multiple times? [0] http://www.cnn.com/2017/02/16/health/flu-shot-effective-cdc-study/ http://www.cnn.com/2017/02/16/health/flu-shot-effective-cdc-...