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流行性感冒 (流感 )是一种由流感病毒引起的急性呼吸道传染病。流感在流行病学上的显著特点为突然爆发 ,迅速蔓延 ,具有一定的季节性 ,发病率高 ,死亡率低。多发于青少年 ,恢复快。每次流行后在人群中造成不同程度的超额死亡 ,死亡者多为年迈体衰或带有慢性疾病的患者。由于流
Influenza (flu) is an acute respiratory infection caused by the flu virus. The epidemiological characteristics of influenza is a sudden outbreak, rapid spread, with a certain seasonal, high incidence, low mortality. Occur in adolescents, faster recovery. Each epidemic causes varying degrees of overdose in the population, most of whom are elderly or with chronic diseases. Due to flow