Abstract: Vitamin A,as one of the most important micronutrients in the body,its deficiency is the leading cause of preventable blindness in children and increases the risk of serious infections leading to disease and death.Vitamin A deficiency remains a major public health problem in most developing countries.Although there are various sources of Vitamin A and ways of supplementation,there is a lack of relatively new policies to guide vitamin A intervention at the national and international levels.Therefore,the following review is made based on the analysis of the latest global Vitamin A deficiency epidemic trend estimation and a large number of intervention studies.

Key words: vitamin A, intervention, review, children

摘要： 维生素A是人体内重要的微量营养素之一,维生素A缺乏症是导致儿童可预防性失明的主要原因,并增加了严重感染导致疾病和死亡的风险。在大多数发展中国家,维生素A缺乏仍然是重要的公共卫生问题。虽然维生素A的来源多样,补充方式也有多种,但就国家及国际层面而言,缺乏较新的政策指导维生素A的干预。故而在分析全球最新维生素A缺乏症流行趋势及大量干预研究的基础上做出以下综述。

关键词: 维生素A, 干预, 综述, 儿童