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副流感病毒属粘液病毒群,中等大小(150～250毫微米),为球形的RNA病毒,有脂蛋白外膜,不耐醚,不耐酸,具有特异性的可溶性抗原,在感染的细胞培养上产生血吸附现象,可凝集多种动物的红细胞。副流感病毒是呼吸道感染的主要病原之一,广泛分布于人群,四季都有散发病例,常流行于秋季及冬季。主要引起婴儿及儿童的上呼吸道感染以及严重的下呼吸道感染,成人可因再感染而呈轻型感冒症状。
The parainfluenza virus is a group of myxoviruses that are medium sized (150-250 nm) spheroidal RNA viruses that have an outer membrane of lipoproteins that are not resistant to ether and are acid-labile and have specific antigens that are soluble in cultured cells Produce blood adsorption phenomenon, can agglutinate a variety of animal red blood cells. Parainfluenza virus is one of the major pathogens of respiratory tract infections, widely distributed in the population, all four seasons have sporadic cases, often popular in autumn and winter. The main cause of upper respiratory tract infections in infants and children and severe lower respiratory tract infection, adults may be re-infected with mild cold symptoms.