Harvard Heart Letter

Lower your heart attack and stroke risk with a flu shot



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If you've had a heart attack, an annual influenza vaccine may cut your risk of another heart attack in half.

Peak flu season is looming, so get your vaccination soon.

If you didn't get a flu shot last fall, it's not too late to roll up your sleeve. If you need extra incentive, consider this: a new study suggests that getting an influenza vaccination lowers your odds of a having a heart attack, a stroke, heart failure, or another major cardiac event—including death—by about a third over the following year.

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