contagion

contagion is a Noun

Definition:

[1] The transmission of a disease from one person to another, by direct or indirect contact.

[2] 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.

[3] The act or means of communicating any influence to the mind or heart; as, the contagion of enthusiasm. "The contagion of example." Eikon Basilike. When lust . . . Lets in defilement to the inward parts, The soul grows clotted by contagion. Milton.

[4] Venom; poison. [Obs.] "I`ll touch my point with this contagion." Shak.