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许多急性脑膜炎球菌感染是由 Y 和W135群脑膜炎球菌引起的,为了扩大脑膜炎菌苗的保护效果,应将 Y 和 W135群多糖加到A 和 C 群多糖中。本研究旨在评价这种四价制剂临床上的
Many acute meningococcal infections are caused by meningococci of the Y and W135 groups. To extend the protective effect of meningitis vaccines, Y and W135 polysaccharides should be added to the A and C polysaccharides. This study aimed to evaluate the clinical efficacy of this tetravalent preparation