Why do you need to get a new flu shot every year

You need to get a flu shot yearly so that your body is immune or stronger towards the flu, or other diseases.

Hope it helped :)

To prevent yourself from getting sick. You will always have to take shots every year of your life to keep yourself healthy and intact. Flu shots are just one of those shots you have to take.

nah I'm good

Explanation:

but thx for the points