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一些报告指出多价肺炎球菌多糖菌苗有肯定的预防效果。Ammamm对77名镰形细胞性贫血患者和19名脾切除者用多价肺炎球
Some reports indicate that the multivalent pneumococcal polysaccharide vaccine has a positive preventive effect. Ammamm used multi-valent pneumococcal spikes on 77 sickle cell anemia patients and 19 splenectomies