Is a ‘twindemic’ on the horizon? Experts warn of brutal flu season as COVID-19 still spreads. Here are 8 things to know about getting your flu shot.

Of those who were unsure or not planning to get vaccinated, 34% did not believe the flu vaccine worked well, 32% said they never got the flu, 29% were concerned about potential side effects and 22% said they were worried about catching the flu from the immunization — though that’s not possible. Flu shots are made from either the inactivated virus or a single protein from the virus, and cannot cause illness, according to the CDC.