科学家们不仅完全绘出了引起脑膜炎的几种细菌的基因编码，并且辨认出了在这几种细菌表面的蛋白质，于是，有可动制造出一种预防脑膜炎的疫苗。共有5种细菌可引起脑膜炎以及另一种疾病──败血症。现在虽已有2种研制成功的脑膜步疫苗，它们可以预防2种细菌引起的脑膜炎，但还没 Scientists have not only completely coded the genes of several bacteria that cause meningitis, but also identified proteins on the surface of these bacteria. Thus, they have been able to create a vaccine that prevents meningitis. A total of five bacteria can cause meningitis and another disease ─ ─ sepsis. Although there are two kinds of successful meningeal vaccine now, they can prevent meningitis caused by two kinds of bacteria, but not yet