1-3 Days: He may be feeling the symptoms of the body simply "recognizing" the influenza vaccine. However it is also equally likely he is coming down with a cold virus that just happens to be after he got the flumyst. If you have concerns about his health, see your pediatrician in the next day.
Answered 7/19/2020
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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