Contagion :: Contagion (n.) The transmission of a disease from one person to another, by direct or indirect contact..
Contagion :: Contagion (n.) That which serves as a medium or agency to transmit disease; a virus produced by, or exhalation proceeding from, a diseased person, and capable of reproducing the disease..
Contagion :: Contagion (n.) The act or means of communicating any influence to the mind or heart; as, the contagion of enthusiasm..