Read these articles also also google : ringworm contagious
http://life.familyeducation.com/infectio...
Ringworm is contagious (spread to others) through direct contact with an infected person or animal. It can also be spread indirectly through contact with the clothes, combs, or brushes of others who have it. Once treatment has begun and the circular rash begins to shrink, the rash won't be contagious. Until then, however, a person with ringworm can spread it to others.
To help prevent your child from getting ringworm after contact with an infected person or animal, it's important that your child wash his hands often and avoids sharing personal items (clothes, hats, brushes, and combs). If your child already has ringworm, be sure to wash bathroom surfaces and toys daily. If your pet has a rash, have it evaluated by a veterinarian. If it's caused by a fungus, your child should avoid contact with the animal until the rash has been treated.
Also
http://www.christinas-home-remedies.com/...
# Ringworm transmissions from person to person are more common in crowded living conditions and warm climate. The fungus can contaminate hairbrushes, clothing, towels, bed sheets and the backs of seats or public transport surfaces. The spores are long lived and can infect another individual months later.
# Ringworm transmission from animal to person may occur by direct contact with an infected animal and are not generally passed from one person to another.
# Ringworm transmission from soil to person usually arises when working in infected soil but are sometimes transferred from an infected animal.