Flu Shot Facts & Why It’s Important to Get One

little girl pointing to her band aid after getting a shot

When it comes to the flu shot, there are many reasons people give to skip it:

The flu shot gives you the flu.

I’m healthy; I don’t need a flu shot.

I got it last year.

It doesn’t always work.

But here’s the deal: the flu shot does not give you the flu; healthy people need flu shots; even if you got it last year, you still need to get it this year, and it’s the best protection against flu-related complications.

Flu Shot Facts

Can the flu shot give you the flu?
No. Flu vaccines are made with either ‘inactivated’ flu viruses that have been killed and, therefore, are not infectious or by using a single gene from a flu virus. The single gene produces an immune response without causing an infection. However, an immune response can cause mild symptoms such as achy muscles or a low-grade fever.

Do healthy people need to get a flu shot?
Yes, even healthy people should get a flu shot. The flu virus can spread quickly from others up to six feet away and even from surface contact. To avoid influenza and to protect yourself and your family, the CDC recommends everyone over the age of six months get the flu vaccine annually.  

I got a flu shot last year. Why do I need it again?
Flu virus strains change over time, and new vaccines are produced continuously to combat them; that’s why it’s vital to get vaccinated for each flu season. In addition to that, your body’s immune response to vaccines declines over time, so staying current on your vaccines is vital to your health.

The shot doesn’t always work, so why bother?
According to the CDC, the 2023–2024 flu shot is 44% effective at preventing flu-related hospitalization in adults and 60% effective at preventing flu-related hospitalization in children.

According to Dr. Grein of Cedars Sinai, “data shows that the flu shot not only reduces your risk of getting the flu but can also significantly reduce how sick you get. Overall, people who get the flu shot but still get the flu have shorter symptoms and are much less likely to be hospitalized or suffer serious complications.”


Flu season typically begins in October and peaks between December and February. The CDC recommends getting the flu vaccine by the end of October. Use the flu vaccine finder to locate an Immunizer near you.

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