背景资料在人类历史上,出现过多次由各种病毒引起的大规模传染病,近几年爆发的就有非典(SARS)、流感等。流感是由流行性感冒病毒(流感病毒)引起的一种急性呼吸道传染病。流感病毒结构自外而内可分为包膜、基质蛋白以及核心三部分。 Background information In human history, there have been many large-scale epidemics caused by various viruses. SARS and influenza have erupted in recent years. Flu is an acute respiratory infection caused by the influenza virus (influenza virus). Influenza virus structure from the outside and can be divided into envelope, matrix protein and the core of three parts.