Summary:
- The flu shot is an annual vaccine that helps protect against the influenza virus, which can cause serious illness and even death in some cases.
- Common side effects of the flu shot include soreness, redness, or swelling at the injection site, as well as mild fever, headache, and muscle aches. These side effects are typically mild and go away within a few days.
- The flu shot is made up of inactivated or weakened flu viruses, along with other ingredients like egg proteins, preservatives, and adjuvants that help the vaccine work more effectively. These ingredients are safe and have been thoroughly tested for use in the flu vaccine.