流行性感冒（流感）是由流行性感冒病毒引起的急性呼吸道传染病。传染源主要是病人及隐性感染者，潜伏期短（１～３天），一般在潜伏期末至病后３天传染性最强，途径为飞沫传播，人群普遍易感，流行多见于冬春季。临床表现为高热、头痛、全身酸痛乏力及轻微呼吸道症状，病... Influenza (influenza) is an acute respiratory infection caused by the influenza virus. The main source of infection in patients and latent infection, the incubation period is short (1 to 3 days), usually in the incubation period to 3 days after the illness the most contagious, the way for droplets spread, the crowd is generally susceptible to epidemic more common in winter and spring . Clinical manifestations of fever, headache, generalized soreness and mild respiratory symptoms, disease ...