除了资金不足、依然薄弱和低效的卫生体系（特别是在农村地区 ） ， 非洲国家还面临无力承担更加昂贵的新疫苗的挑战。
Beyond inadequately financed health systems, which remain weak and inefficient, especially in rural areas, African countries face challenges in affording new, more expensive vaccines.