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我国创立的动物口服S2苗预防布病研究成功已近30年，本方法已载入FAO／WHO布病专家委员会第六次公报（1985）[1]。FAO／WHO组织英国等8个国家对本苗苗免疫途径也作过验证研究‘”，现就免疫效果简要综述如下。1羊的免疫效果谢听等对绵羊进行6次口服S；苗试验卜’，在怀孕中期经
The establishment of China’s animal oral S2 vaccine for the prevention of brucellosis research has been successful for nearly 30 years, this method has been included in the sixth meeting of the FAO / WHO brucellosis expert’s communique (1985) [1]. Eight countries in the United Kingdom, including the United Nations and FAO / WHO, have also conducted validation studies on the immunization pathways of this vaccine [1]. The immunological effects are summarized as follows: 1 The immunization effect of sheep Xie et al. , During the second trimester