引起脑脊髓炎的病毒侵入中枢神经系统的途径大体上有二种:一种是先在神经以外的组织中繁殖,经过血行播散入脑、脊髓、如乙型脑炎和脊髓灰白质炎;另一种直接沿周边神经轴索繁殖侵入中枢神经组织,如狂犬病、疱疹病毒性脑炎等。 Encephalomyelitis virus invade the central nervous system in general there are two ways: one is to first propagate in tissues other than the nerve, disseminated through the bloodstream into the brain, spinal cord, such as Japanese encephalitis and spinal meningitis; Another directly along the peripheral axonal propagation invade the central nervous system, such as rabies, herpes virus encephalitis and so on.