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新生儿及老年人均易受感染,抗感染的能力均减弱,因为他们都有免疫系统缺陷。新生儿免疫系统不成熟,老年人防御能力减退,加之衰老本身、慢性疾病、体质衰弱,使老者易受感染,而新生儿面临着微生物的暴露。新生儿健康足月(38周孕)新生儿免疫功能在多方面被抑制。婴儿出生时第一次暴露于多种病原体中,而这些病原体并不是经常可以抑制的。早产儿或足月低体重儿则常合并免疫缺陷。新生儿免疫力新生儿的单核细胞趋化性及吞噬作用低下,导致
Neonates and the elderly are susceptible to infection and their ability to fight infections is diminished as they all have immune system deficiencies. Neonatal immune system is immature, the elderly defense ability decline, combined with aging itself, chronic diseases, physical weakness, the elderly vulnerable to infection, and newborns are exposed to microbial exposure. Neonatal healthy term (38 weeks of pregnancy) Neonatal immune function is inhibited in many ways. For the first time, a baby is exposed to multiple pathogens at birth, and these pathogens are not often suppressive. Premature children or term low birth weight children are often combined immunodeficiency. Neonatal immunity in neonatal monocyte chemotaxis and phagocytosis is low, resulting in