Dear Stephanie,
Poison ivy spreads only with contact with the oily sap of the plant (physical
contact with the leaves, stem, roots) and through the smoke from burning
leaves. Once the oily sap is thoroughly washed off, no more spread. However,
skin that was exposed can continue to "break out" for several days, even a
week after the initial exposure. The lesions on your skin are not contagious,
even if they are painful. Keep everything clean to prevent secondary
infections in broken skin and wait it out. Anti-inflammatory medications and
homeopathics might provide some relief - I've had good luck with Rhus Tox. I
once cut down weeds in a ditch wearing my soccer cleats, then washed myself
and my clothing thoroughly, but forgot about cleaning the shoes. Months later
I sat cross-legged while wearing the cleats. The sap on the shoes rubbed off
on my legs - another reaction triggered. Good luck with this nasty plant.

Linda Smith, with one more reason why I hate gardening