How Long Does the Flu Shot Last: The duration of protection provided by the flu shot can vary from person to person. Generally, the flu shot provides immunity for about six to eight months. However, the effectiveness of the vaccine can diminish over time as the flu virus mutates. That’s why it’s recommended to get a flu shot annually to stay protected. The flu shot not only helps prevent the flu but also reduces the severity of symptoms if you do contract the virus. Consult with your healthcare provider for personalized recommendations regarding flu vaccination.
