Contagious Health Dictionary

A term used to describe a disease that can be transferred from person to person by ordinary social contact. All contagious diseases, such as the common cold or chickenpox, are infectious. The term contagious does not apply to the many infectious diseases, such as typhoid, syphilis, or , which are spread by other means.

An infectious disease which is transmissible from one person to another. Sometimes used synonymously with “infectious”.