婴幼儿由于出生前母体和胎儿的病理变化,出生后喂养食物中蛋白质和热量不足以及感染等原因,造成营养不良者并不少见。营养不良、免疫功能与感染三者之间存在着极为密切的关系。营养不良的婴儿,免疫功能受到损害,容易发生感染;感染时,摄入量减少,蛋白质以及各种营养物质大量消耗,加重了营养不良。感染和营养不良均影响到机体的免疫状态。营养不良合并感染时免疫状态究竟如何,国内报道尚少。为此,我们观察了 Infants and young children due to prenatal maternal and fetal pathological changes, post-natal feeding of protein and calories and lack of heat and other reasons, resulting in malnutrition are not uncommon. Malnutrition, immune function and infection there is a very close relationship between the three. Malnourished infants have impaired immune function and are prone to infection; at the time of infection, their intake is reduced, protein and various nutrients are consumed in large quantities, aggravating malnutrition. Both infection and malnutrition affect the immune status of the body. Malnutrition infection with immune status exactly how, domestic reporting is still small. To this end, we observed