Vitamin A is an essential micronutrient for human being,which improves, and maintains the normal metabolism of respiratory epithelial cells, strengthens respiratory system anti-infection ability, and reduce the respiratory infection risks. If measles patients are supplemented with Vitamin A during clinical care,it might reduce morbidity and mortality of measles complication, such as pneumonia, diarrhea, tympanitis,shorten the course of measles, and promote the patient healing. Production of measles IgG can be promoted and the immunity would last longer for the babies and infants supplemented with vitamin A when receiving measles vaccine. Reasonable supplement of vitamin A could prevent the deficiency, enhanced immunity, and decreased the incidence of measles.%维生素A可以完善、维持呼吸道上皮细胞的正常代谢,增强呼吸道的抗感染能力,降低呼吸道感染发病风险.麻疹患者临床治疗时适量补充维生素A可以降低肺炎、腹泻、中耳炎等并发症的发生率和患者病死率,缩短麻疹患者病程,促进患者康复.婴幼儿接种麻疹疫苗时补充维生素A可以促进麻疹抗体IgG的产生,延长抗体的持续时间.合理补充维生素A能预防其缺乏,提高机体免疫力,减少麻疹的发生率.
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