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流感临床表现为发热、头痛、肌痛、乏力、咳嗽等,初期与非典的鉴别困难,流感传播快,流行广,抗原易变异,对人危害性不小;它能加重潜在疾病,引起继发细菌性肺炎或原发流感病毒性肺炎;易使慢性病及年老体弱者出现并发症,病死率较高。流感病毒分甲、乙、丙三型,前二者对人类威胁较大。流感在北方通常冬季流行,南方发病高峰夏、冬季都有可
Influenza clinical manifestations of fever, headache, muscle pain, fatigue, cough, etc., the initial identification of SARS is difficult, rapid spread of influenza, widespread epidemic, antigen-prone variation, harmful to people is not small; it can aggravate underlying diseases, causing secondary Bacterial pneumonia or primary influenza virus pneumonia; easy to make chronic diseases and frail elderly complications, higher mortality. Influenza virus points A, B, C three types, the former two are more threatening to humans. Flu is usually popular in the north in winter, peak in summer in the south, and winter are available