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当前学科:儿科住院医师
题目:
单选题
目前我国预防接种流行性脑脊髓膜炎疫苗方面,下列哪项是正确的()
A
A群多糖菌苗
B
B群多糖菌苗
C
A、B、C菌群混合疫苗
D
菌苗注射后预防效果可达100%
E
菌苗注射对象为10岁以下儿童
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