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问:卡介苗为什么能够预防儿童结核病?接种时应注意哪些事项? 答:卡介苗(BCG)是活菌苗,由无毒牛型结核杆菌制成。国际上一些有对照的研究证实,BCG预防儿童结核病,特别是预防结核性脑膜炎、粟粒型结核病高度有效。BCG引起的特异性抗结核免疫作用是通过细胞免疫反应来实现的,当BCG初入体内,巨噬细胞将抗原信息传递给T细胞,使它产生免疫活性物质,多淋巴激肽或淋巴介质,其中移动抑制因子(MIF)、
Q: Why BCG can prevent childhood tuberculosis? Vaccination should pay attention to what matters? A: Bacille Calmette-Guérin (BCG) is a live vaccine, made of non-toxic bovine Mycobacterium tuberculosis. Internationally, some controlled studies confirm that BCG is highly effective in preventing tuberculosis in children, especially in preventing tuberculous meningitis and miliary tuberculosis. BCG-specific anti-TB immune effect through the cellular immune response to achieve, when BCG into the body, the macrophages will be antigen information to T cells, it produces immune active substances, lymphokines or lymph mediators, Which move inhibitory factor (MIF),