Can carpeting cause ringworm ?

Not without fungus: Ringworm develops after the spores of a fungus settle in the top layers and begin eating away at the oldest skin cells. Spores may be found in a variet of spaces: dirt, animals, other human contact or in their clothing or towels etc. Your carpet may be contaminated with fungal spores and be a source for ringworm, but you won't get it from the carpet fibers alone.

Possibly : Ringworm is a fungal infection known as tinea. It can infect animals and humans. Dogs and cats can carry spores and be asymptomatic. The spores can be shed on surfaces such as carpeted areas. Prolonged close contact with these surfaces can occasionally start a new infection of the skin. Have pets examined by a veterinarian if you have been diagnosed with ringworm.