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Influenza: Can I get the flu from the flu vaccine? How long does it take for the flu vaccine to work?

Posted by on Wednesday, September 7, 2022 in .

No, you cannot get the flu from the flu vaccine. Viruses in the injectable vaccine are killed, therefore, the vaccine cannot infect anyone. The flu vaccine will begin to work about one to two weeks after you receive the vaccine. More information can be found here.