The influenza vaccine will provide immunity from the flu for at least 3 years per dose.
Understand the Problem
The question is a true or false statement about the duration of immunity provided by the influenza vaccine (flu shot). The statement claims that the vaccine provides immunity from the flu for at least 3 years per dose. We need to determine if this statement is accurate.
Answer
False
False. The influenza vaccine does not provide immunity from the flu for at least 3 years per dose. The optimal protection offered by the influenza vaccine lasts for 3–4 months following vaccination; after this, the level of protection begins to decrease.
Answer for screen readers
False. The influenza vaccine does not provide immunity from the flu for at least 3 years per dose. The optimal protection offered by the influenza vaccine lasts for 3–4 months following vaccination; after this, the level of protection begins to decrease.
More Information
Flu vaccines need to be administered annually due to the duration of protection and because circulating viruses can change from year to year.
Tips
A common mistake is assuming that one dose of the flu vaccine will provide long-term immunity.
Sources
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