The Centres for Disease Control and Prevention, an American government agency, says that after fortification began, in 1998, the reported prevalence of spina bifida in babies declined by 31%.

• 美国政府机构----疾病预防控制中心称，自从1998年这个项目开始以来，婴儿患脊柱裂病的几率降低了31%25。