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十五價疫苗含 15種莢膜抗原(1、3、4、5、6A、6B、7F、9V、14、18C、19A、19F 22F、33F、22F、23F和33F)研究顯示十五價疫苗對血清三型肺炎球菌的免疫反應或高於十三價及二十價疫苗,可能更有效預防血清三型肺炎球菌引致的侵入性肺炎球菌感染。

PCV15 includes 15 capsular antigens (1, 3, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F, 22F, 23F and 33F).PCV15 induced higher immunogenicity against serotype 3 which may potentially be more effective in preventing IPD caused by serotype 3, although further evidence on clinical effectiveness and impact is still pending.