七价肺炎球菌结合疫苗是由 4、6 B、9V、1 4、1 8C、1 9F和 2 3F型肺炎球菌荚膜多糖与B群脑膜炎球菌外膜蛋白复合物结合而成。婴儿在 2、4、6月龄接种时 ,此菌苗具有免疫原性 ,并且在肺病发生危险性较高的 1 2月龄加强注射肺炎球菌多糖疫苗能诱生免疫回忆应答。由于在 2岁儿童 The seven-valent pneumococcal conjugate vaccine is a combination of 4,6 B, 9V, 1 4, 1 8C, 1 9F and 2 3F pneumococcal capsular polysaccharides and meningococcal group B outer membrane protein complexes. This vaccine is immunogenic when infants are vaccinated at 2, 4, and 6 months of age, and an intensive pneumococcal vaccine at 12 months of age at a high risk of developing lung disease can induce an immune recall response. As in 2-year-old children