is poison sumac contagious
Scratching poison ivy blisters will not spread the rash. In addition, the poison ivy rash is not contagious-only urushiol (oil found in the sap of poison ivy) can cause a reaction.These plants can cause an allergic reaction in nearly 85 percent of the population.oison ivy/poison oak cannot be spread from person to person by touching the blisters, or from the fluid inside the blisters. It can be spread, however, if the oils remain on the skin, clothes, or shoes. This is why washing your hands, clothes, and shoes as soon as possible is very important.