腹泻和肺炎是发展中国家儿童死亡的主要原因。据 1 999年 1 2月出版的《Journal ofPediatrics》载文报道 ,9个国家的儿童每天补锌 5～ 2 0 0 mg,共计 2～ 46周 ,结果发生腹泻和肺炎的危险分别下降了 2 5 %与 41 % ,而且补锌的效果远比其它干预措施要好。因此 ,本研究的研究人员 Diarrhea and pneumonia are the major causes of child death in developing countries. According to an article in the Journal of Pediatrics published in January 1999, children in nine countries drank 5-20 milligrams of zinc per day for 2 to 46 weeks, resulting in a 2.5-fold reduction in the risk of diarrhea and pneumonia % And 41%, and the effect of zinc supplementation is better than other interventions. Therefore, the researchers in this study