营养不良和感染可单独存在也可共同存在,后者较长见。营养不良和感染也是全球性的发病和死亡的主要原因,在贫穷家庭幼儿中更是这样。贫困、不良的个人卫生和标准很低的环境卫生等因素导致传染病的增加,也导致营养缺乏,后者更增大了对感染的易感性。营养不良和感染也可互为因果,形成恶性循环。 Malnutrition and infection can exist alone or co-exist, the latter longer. Malnutrition and infection are also major causes of morbidity and mortality globally, even among young children in poor households. Factors such as poverty, poor personal hygiene and low standards of sanitation have led to an increase in infectious diseases and nutritional deficiencies, which have increased the susceptibility to infection. Malnutrition and infection can also be mutually causal and form a vicious cycle.