宝宝1～3岁时,总爱闹感冒、扁桃腺炎、咽喉炎、气管炎、肺炎、肠炎、皮肤脓肿、中耳炎等感染性疾病。为什么会这样呢?这是因为小儿有段“易感染期”。此时的小儿身体抵抗力最弱、最容易生病。何为“易感染期”?就是在这段时间内,小儿的抵抗力较差,抵抗不住病原体的进攻。抵抗力之所以差,一是因为小儿的免疫系统发育不成熟;二是因为小儿从母体带来的抗体已耗尽。新生儿刚出生时,体内有经胎盘传递来的母体抗体,这 Baby 1 to 3 years old, always love the flu, tonsillitis, pharyngitis, bronchitis, pneumonia, enteritis, skin abscess, otitis media and other infectious diseases. Why is this so? This is because children have a period “susceptible period ”. Pediatric body resistance at this time the weakest, the most vulnerable to illness. What is “susceptible period” is in this period of time, children’s poor immunity, resist the attack of pathogens. The reason why the resistance is poor, first, because of the immature immune system in children; Second, because the antibodies brought from the mother has been depleted. When a newborn is born, there is maternal antibody delivered through the placenta