- contagious disease, contagion - any disease easily transmitted by contact
--1 is a kind of communicable disease
--1 has particulars: - infection, contagion, transmission - an incident in which an infectious disease is transmitted
--2 is a kind of incident
- contagion, infection - the communication of an attitude or emotional state among a number of people; "a contagion of mirth"; "the infection of his enthusiasm for poetry"
--3 is a kind of communication