Side effects of the flu shot: The most frequent side effects of vaccination are soreness and redness at the vaccination site that may last for up to 2 days. These reactions are generally mild and rarely interfere with the ability to conduct usual daily activities. Fever, weakness, muscle aches...
Find out if the flu shot will protect you against COVID-19. Get the facts on the seasonal flu vaccine, side effects, reactions, its effectiveness, who should receive the flu shot, and who should not receive the flu shot.