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反复呼吸道感染(RRTI)是最常见的慢性呼吸道疾病,发病率大约20%左右,以2～6岁儿童最常见[1],而其中肺炎的反复发作严重影响儿童身心发育及儿童对各种疾病的抵抗能力,是导致我国小儿死亡的重要原因。儿童特别是婴幼儿生理特点及饮食结构不同于成人,对营养的需求更是高于成人。由于小儿饮食不合理及吸收异常,导致微量
Recurrent respiratory tract infections (RRTIs) are the most common chronic respiratory diseases with a morbidity of about 20% and are most commonly seen in children aged 2 to 6 years [1]. Repeated episodes of pneumonia have a significant impact on physical and mental development in children and on various diseases The resistance is the important reason leading to the death of children in our country. Children, especially infants and young children physiological characteristics and diet are different from adults, the demand for nutrition is higher than that of adults. Due to unreasonable diet and abnormal absorption of children, leading to trace