The flu vaccine cannot give you the flu

Top half shows a photo of a person looking tired at his desk with a red low battery symbol and text: “Feeling crummy after your flu shot?” Lower half has a green background with a green fully charged battery symbol and text: “That’s not the flu. It’s your immune system learning how to protect you. But that's just temporary, until your immunity is fully ramped up.”

The flu vaccine cannot give you the flu

Date posted: October 10, 2025
Last reviewed: October 30, 2025

The Public Good Projects

This graphic explains that mild, temporary side effects are normal after a flu vaccine, including feeling tired or achy, and that this is your immune system building protection.

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