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流行性感冒(流感)是由流感病毒引起的急性呼吸道传染病,是一种极易传染的病毒性呼吸道疾病。流感病毒分甲、乙、丙三种类型,并有多种亚型,尤其是甲型流感病毒,每隔几年即产生新的病毒菌株,所以人们很难对流感产生持久免疫力。 流感是通过飞沫或接触传播,常见于儿童、老人以及有慢性病的患者。流感的潜伏期为数小时至4日,起病急骤,有畏寒高热(38～39℃,偶尔达41℃)、头痛、全
Influenza (influenza) is an acute respiratory disease caused by the influenza virus. It is a highly contagious viral respiratory disease. Influenza virus points A, B, C three types, and a variety of subtypes, especially the influenza A virus, every few years that produce new strains of the virus, so it is difficult to produce lasting immunity to the flu. Flu is transmitted through droplets or contact, common in children, the elderly and people with chronic diseases. Flu incubation period of several hours to 4 days, sudden onset, chills and fever (38 ~ 39 ℃, occasionally up to 41 ℃), headache, all