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本文阐述了世界卫生组织（WHO）关于卡介苗复种的意见,没有证据表明卡介苗复种可增强抗结核病免疫力,因此,WHO对已接种卡介苗者不推荐复种。
This article describes the World Health Organization (WHO) on the BCG vaccination opinion, there is no evidence that BCG vaccination can enhance the anti-TB immunity, therefore, WHO has not vaccinated BCG vaccination recommended.