influenza
n.
1743, borrowed during an outbreak of the disease in Europe, from Italian influenza "influenza, epidemic," originally "visitation, influence (of the stars)," from Medieval Latin influentia (see influence). Used in Italian for diseases since at least 1504 (as in influenza di febbre scarlattina "scarlet fever") on notion of astral or occult influence. The 1743 outbreak began in Italy. Often applied since mid-19c. to severe colds.
〔蒋〕[flu=flow流，影响→感染] 流行性感冒
〔李〕[influenz=to influence影响；-a n.=disease疾病→“disease that influences many people at a time 同时影响许多人的疾病”→] n. epidemic virus disease attacking the upper respiratory tract流行性感冒（侵染上呼吸道的病毒性流行病）