孩子目前没有疫苗可以根治感冒,但可积极预防.研究表明,经常感冒小孩血中维生素A、C明显低于正常水平,这提示补充维生素A、C有助于预防感冒.当维生素A缺乏时,呼吸道纤毛柱状上皮细胞的纤毛减少,并出现鳞状上皮化生,腺体细胞失去正常功能.坏死,脱落的细胞阻塞管腔,使 Children currently have no vaccine can cure a cold, but can be actively prevented.Studies show that children with frequent cold blood in the vitamin A, C was significantly lower than normal, suggesting that vitamin A, C helps prevent colds.When vitamin A deficiency, Respiratory ciliated columnar epithelial cells reduce the cilia and squamous metaplasia, glandular cells lose their normal function. Necrosis, shedding of the cells blocking the lumen, so that