Many parasitologists have studied immune prophylaxis and treatment of parasitoses for about one hundred years all over the world.
全世界的一些寄生虫学工作者，在近百年的时间里，进行着寄生虫病的免疫防治研究。
Drug prophylaxis is sometimes recommended even for those who have started HAART if they have very weak immune systems or are otherwise considered to be especially vulnerable.
如果已开始鸡尾酒疗法的病人免疫系统较弱，或被认为特别脆弱时，也会推荐他们使用药物预防。
Drug prophylaxis is sometimes recommended even for those who have started HAART if they have very weak immune systems or are otherwise considered to be especially vulnerable.
如果已开始鸡尾酒疗法的病人免疫系统较弱，或被认为特别脆弱时，也会推荐他们使用药物预防。
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