contagion

n. spreading of a disease from one individual to another; infectious disease; rapidly spreading influence (i.e. fear or doctrine)

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Noun
1. any disease easily transmitted by contact
(synonym) contagious disease
(hypernym) communicable disease
(hyponym) influenza, flu, grippe
2. an incident in which an infectious disease is transmitted
(synonym) infection, transmission
(hypernym) incident
3. the communication of an attitude or emotional state among a number of people; "a contagion of mirth"; "the infection of his enthusiasm for poetry"
(synonym) infection
(hypernym) communication

nf. infection, contagion

n. nákaza