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A member asked:
Is it poissible to have flu even if you had the flu jab. 4 weeks before
5 doctors weighed in across 2 answers
Yes: The vaccine is not 100% effective and there are a bunch of influenza -like illnesses.
Answered 11/27/2012
5.5k views
Yes: It takes about 2 weeks after vaccination to develop protective antibody. Influenza vaccine is 70-90% protective in healthy young adults. In the older population the vaccine was 58% effective in previnting laboratory documented influenza. Therefore the vaccine, although excellent, does not provide 100% protection and you can still get the flu even though you have been vaccinated.
Answered 3/13/2019
5.5k views
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