巨细胞病毒(cytomegalovirus,CMV)属疱疹病毒科,乙组疱疹亚科。病毒直径约200nm,是最大的动物病毒之一,宿主受染细胞的典型病理变化是细胞增大,细胞核及细胞浆内出现包涵体,故称之为巨细胞病毒。它是一种潜伏病毒,初次感染为原发性感染,病毒进入宿主机体后可终身潜伏,一旦妊娠 Cytomegalovirus (CMV) belongs to Herpesvirus family, Group B herpes subfamily. The virus is about 200nm in diameter, which is one of the largest animal viruses. The typical pathological changes of host infected cells are that the cells increase, and the inclusion bodies appear in the nucleus and cytoplasm, so they are called cytomegalovirus. It is a latent virus, the initial infection is a primary infection, the virus enters the host body can be lifelong latent pregnancy once