我们业已查明,牛型布氏菌病动物间流行时,居住在疫区内的人群中,有29.6—38.9%的人没有临床症状,但发现了机体的免疫学改变。根据等氏的资料,在这些布氏菌素阳性反应的许多人中,潜伏过程将来转变为显性形式。虽然在有布病动物流行病学威胁的地区广泛采用活菌苗免疫,但机体免疫学改造的许多方面尚未充分地被研究过。相应制约体液和细胞免疫的两个淋巴细胞系统(T 和 B We have identified 29.6-38.9% of the people living in the affected area as free from brucellosis during animal epidemics, but have no clinical evidence of the disease but have found an immunological change in the body. According to Isaac’s data, in many people who are positive for these brucellin reactions, the latent process is transformed into a dominant form in the future. Although live vaccine immunization is widely used in areas where the epidemic is at risk of brucellosis, many aspects of immunological engineering of the body have not been adequately studied. The two lymphocyte systems that constrain body fluid and cellular immunity, respectively (T and B)