the communication of an attitude or emotional state among a number of people; "a contagion of mirth"; "the infection of his enthusiasm for poetry"多くの人々の間で態度や情緒の交換伝染
例:The infection of his enthusiasm for poetry. 彼の詩への熱意が伝染すること。
an incident in which an infectious disease is transmitted伝染病が移る事件接触感染
the pathological state resulting from the invasion of the body by pathogenic microorganisms病原微生物が体内に侵入することで生じる病理学的な状態感染