1 doctor weighed in:

Flu mist symptoms how long do the effects of flu mist last? My son had it monday and now has a runny nose, fatigue and sore throat. No fever

1 doctor weighed in
Dr. Adam King
Internal Medicine & Pediatrics

In brief: 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.

In brief: 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.
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