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美国国立癌研究所的Salahuddin等用淋巴细胞性疾病患者的末梢血培养出新的疱疹病毒,命名为人类亲淋巴细胞病毒(BHLV)。这种病毒与人类疱疹病毒之间无共同抗原,因此,HBLV是一种新的疱疹病毒。此后,数群类似的病毒被分离。艾滋病研究中心从淋巴细胞异常疾病患者中分离出人类疱疹病毒,HHV-6,这种病毒和哪一种疾病有关联还未明确。血清学检查发现抗体保有率生后5个月内低,6个月以后上升,1岁以后几乎100％的儿童保有抗体。所以认为HHV-6感染年龄相当低。
A new herpesvirus was cultured in peripheral blood of patients with lymphocytic diseases such as Salahuddin from the National Cancer Institute and named as human pro-lymphocyte virus (BHLV). There is no common antigen between this virus and human herpesvirus, so HBLV is a new herpes virus. Since then, a number of similar viruses have been isolated. The AIDS Research Center isolated the human herpes virus, HHV-6, from patients with idiopathic lymphoproliferative disorders. It is unclear which type of disease the virus is associated with. Serological tests found that antibody retention was low within 5 months of birth and increased after 6 months, with almost 100% of children 1 year old having antibodies. So that the age of HHV-6 infection is quite low.