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病毒是一类比细菌小且不具细胞结构的微生物,其核心为核酸,外表裹以蛋白质的衣壳。据统计,临床感染疾病中的85%是由病毒引起的,死亡率也较高,尽管近几年抗病毒药的发展较快(1997年～1999年全球共有117种新药投放市场,而用于抗病毒的药物就有14种,约占12%),但由于病毒寄居在宿主细胞内,药物难以到达病变部位,同时病毒的快速变异引起耐药性的产生,使得大多数的药物都存在毒副作用大、疗
Viruses are a class of microorganisms that are smaller than bacteria and have no cellular structure, the core of which is a nucleic acid that is coated with a protein capsid. According to statistics, 85% of clinically infected diseases are caused by viruses and the mortality rate is high, although the development of antiviral drugs has been rapid in recent years (a total of 117 kinds of new drugs were put on the market from 1997 to 1999, There are 14 antiviral drugs, accounting for about 12%), but because the virus resides in the host cells, the drug is difficult to reach the lesion site, while the rapid mutation of the virus caused by drug resistance, making most drugs are toxic Side effects, treatment