An infectious disease transmissible by direct contact.
A disease which can be transmitted by touching an infected person or objects which an infected person has touched.
Originally, a disease transmitted only by direct physical contact: now usually taken to mean any communicable disease.
Any disease (usually an infectious disease) readily transmitted from one person to another.
Disease that is spread from one person to another person. Some of the more contagious diseases are the common cold, ringworm, conjunctivitis (pinkeye), viral infections, and natural nail or toe and foot infections.