WHO世界卫生组织：2025年估计新生儿特定不良事件的背景率：早产、胎儿死亡、新生儿死亡和低出生体重报告（英文版）

During pregnancy, women and infants are predisposed to specific infections due to various immunological and physiological changes. These infections can result in adverse outcomes. The risk and severity of these infections can be attenuated through maternal vaccination, whose benefits have been demonstrated before. The World Health Organization (WHO) already recommends maternal vaccination against tetanus, pertussis and influenza to protect infants. The United