Because of the high risk for serious meningococcal infections, all 196 PNH patients in the clinical studies were accinated with a meningococcal accine;

• 由于有此风险，所有参与实验的196名PNH患者均接种了脑膜炎疫苗，用药期间有2例出现脑膜炎球菌性脓毒血症。