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ladybug1972
ladybug1972 asks:
Q:

Is it really possible to get H1N1 twice?

My son tested positive for Type B flu in Sept. and again today.  He had the regular flu mist vaccine in Oct.
In Topics: H1N1 Flu (Swine Flu)
> 60 days ago

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Expert

Wayne Yankus
Nov 23, 2009
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What the Expert Says:

Dear ladybug:

If you know you had H1N1,then you can't get it twice in the same season.  However most of our office kits are not specific for H1N1 but for influenza A/B. therefore, unless your son had the seasonal flu mist and was tested within two weeks, he may have had two different flu strains. Testing too close to the mist gives a false positive.

Wayne Yankus, MD, FAAP
expert panelist: pediatrics

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