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My dh is the celiac in the family, self-dx'd a year ago, confirmed via
blood testing (but no biopsy) just recently.  It seems that he gets sick
(ie, colds and flus) in one of two ways: either he gets "a touch" of it,
and it lingers for several weeks, or he gets really, really sick and is
wiped out for at least a full week-- in bed, virtually unconscious.
These are not celiac- related illness, but colds, flu, strep (the most
recent ailment).

Does celiac affect the rate at which people recover from colds and flus
and other winter bugs?

Later,
Pam
"Dileges Dominum Deum ex toto corde tuo,
  et in tota anima tua, et in tota mente tua. "