<<Disclaimer: Verify this information before applying it to your situation.>>

If I accidently ingest traces of gluten, I do not show any symptoms.
However, I have been told by many people that the long term effect should
permanently damage your intestines to the point that a gluten free diet
will not help.  I was told this by the doctor that diagnosed me a few years
ago, by the dietician who helped me get aquainted to the gluten free diet,
and by several people who also have Celiac Disease.  Also, this is noted on
the web page of the Canadian Celiac Association.  If I were you I would not
take the risk, not with your child. I have been diagnoised for over 15
years and and been on a gluten free diet.    I still, after all that time,
do not react strongly if I accidently ingest a trace.