流行性感冒(简称流感)是由流感病毒引起的急性呼吸道传染病。流感以人际传播、空气飞沫传播为主,传播能力强。最常见的流感起病突然,畏寒、寒战,高热,体温可达39℃~40℃,伴头痛、全身肌肉关节酸痛、极度乏力、食欲减退等全身症状,常有咽喉痛、干咳,可有鼻塞、流涕等。如无并发症,多于发病3~4天后症状好转,但咳嗽、体力恢复常需1~2周;轻症者症状与普通感冒相似,症状轻,2~3天可恢复。 Influenza (influenza) is an acute respiratory infection caused by the influenza virus. Flu to interpersonal communication, air droplets spread mainly spread strong. The most common onset of influenza sudden, chills, chills, fever, body temperature up to 39 ℃ ~ 40 ℃, with headache, body aches and pains, extreme fatigue, loss of appetite and other symptoms, often sore throat, dry cough, may have Nasal congestion, runny nose and so on. If no complications, more than 3 to 4 days after onset of symptoms improved, but cough, physical recovery often takes 1 to 2 weeks; mild symptoms similar to the common cold, mild symptoms, 2 to 3 days to recover.