Transmission
Both cellulitis and erysipelas begin with a minor incident, such as a bruise. They can also begin at the site of a burn, surgical cut, or wound, and usually affect your arm or leg. When the rash appears on your trunk, arms, or legs, however, it is usually at the site of a surgical cut or wound.
Even if you have no symptoms, you carry the germs on your skin or in your nasal passages and can transmit the disease to others.