The flu shot is an easy way to lower your risk of getting sick during flu season. Plus, you won't be passing the virus around to your loved ones. Flu shots are made from dead viruses and cannot give you the flu, but they can cause an immune reaction from your body, so you may get some mild symptoms such as a slight fever and aching muscles for a couple of days after having the injection. Serious side effects of the injected flu vaccine are rare.

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