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关于傳染性肝炎的免疫問題,由于病毒分离尚未成功,說法不一,因而尚未很好地获得解决。或謂病后可以終生免疫,能抵抗再感染者。Have-ns以同株病毒再次感染已感染过一次的志愿者,可因其已产生免疫力而不再得病。但也有不少学者認为免疫并非絕对的,Hartmans統计儿童患肝炎后,成人时再发率为3-5％,随时間过去免疫力相应降低,遇毒力大,多量的病毒则可再感染,但潛伏期可能較長而病情較輕。 ward氏分析再感染可能有以下原因:(1)
With regard to the immunization of infectious hepatitis, the virus has not been successfully resolved because of dissatisfaction and has not been well addressed. Or that the disease can be lifelong immunization, to resist re-infection. Have-ns re-infected with the same virus has been infected once the volunteers, but because of its immunity has been no longer get sick. However, many scholars believe that immunization is not absolute. According to Hartmans’s statistics, the incidence of recurrent hepatitis in adults is 3-5% in adults, and the immunity decreases correspondingly with the passage of time. In case of large virulence, a large amount of virus may be Re-infection, but the incubation period may be longer and less serious condition. Ward’s analysis of re-infection may have the following reasons: (1)