病毒在呼吸道感染性疾病的病因中占有很重要的位置,受到环境变化和生态平衡破坏的影响,病毒也发生了各种变异,尤其出现了一些新的病毒(emergingvirus) ,常突然爆发,病情凶险,病死率高,给临床诊断和治疗及疾病的监控带来很大困难,医务人员需提高警惕。以下介绍近年来出现的致呼 The virus occupies a very important position in the cause of respiratory tract infectious diseases. Due to environmental changes and ecological balance damage, various mutations have taken place in the virus. In particular, there have been some emerging virus emerging suddenly and extremely dangerous , High fatality rate, to clinical diagnosis and treatment and disease monitoring has brought great difficulties, medical staff need to be vigilant. The following describes the appearing in recent years