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　　嬰??(ying)幼??(you)兒??(er)期??(qi)(0～3歲??(sui))??，新??(xin)生??(sheng)兒??(er)免??(mian)疫??(yi)系??(xi)統(tǒng)??(tong)像??(xiang)一?(yi)支??(zhi)未??(wei)經(jīng)??(jing)實??(shi)戰(zhàn)??(zhan)的??(de)“新??(xin)兵??(bing)部??(bu)隊??(dui)”??，先??(xian)天??(tian)性??(xing)免??(mian)疫?(yi)(如??(ru)中??(zhong)性?(xing)粒??(li)細??(xi)胞??(bao)、巨??(ju)噬??(shi)細??(xi)胞??(bao))活??(huo)性??(xing)高?(gao)??，但??(dan)皮??(pi)膚??(fu)、黏??(nian)膜??(mo)屏??(ping)障??(zhang)薄??(bo)弱??(ruo)??，易??(yi)受??(shou)病??(bing)毒??(du)(如??(ru)呼?(hu)吸??(xi)道??(dao)合??(he)胞??(bao)病??(bing)毒??(du)、輪??(lun)狀??(zhuang)病??(bing)毒??(du))侵??(qin)襲??(xi)??。??此??(ci)時??(shi)主?(zhu)要??(yao)依?(yi)賴??(lai)母??(mu)體??(ti)通??(tong)過??(guo)胎??(tai)盤??(pan)和??(he)母??(mu)乳??(ru)傳??(chuan)遞??(di)的??(de)抗??(kang)體?(ti)(如?(ru)IgG、IgA)提??(ti)供??(gong)保??(bao)護??(hu)???！　∵@??(zhe)一??(yi)階??(jie)段??(duan)的??(de)維?(wei)護??(hu)重??(zhong)點?(dian)包??(bao)括??(kuo)：接??(jie)種??(zhong)水??(shui)痘??(dou)、HPV疫??(yi)苗?(miao)(9歲??(sui)以??(yi)上??(shang))??，強?(qiang)化??(hua)免??(mian)疫??(yi)記??(ji)憶??(yi)；均?(jun)衡??(heng)飲??(yin)食??(shi)??，多??(duo)攝??(she)入??(ru)蛋??(dan)白??(bai)質(zhì)??(zhi)(雞??(ji)蛋??(dan)、魚??(yu)肉??(rou))、維??(wei)生??(sheng)素??(su)C(柑??(gan)橘??(ju)類??(lei))、鋅??(xin)(堅??(jian)果??(guo))??，促??(cu)進??(jin)免??(mian)疫??(yi)細??(xi)胞??(bao)再?(zai)生??(sheng)；保??(bao)證??(zheng)8～10小??(xiao)時??(shi)睡??(shui)眠??(mian)??，適??(shi)度??(du)運??(yun)動??(dong)??，減??(jian)少??(shao)熬??(ao)夜?(ye)和??(he)壓??(ya)力??(li)對??(dui)免??(mian)疫?(yi)力??(li)的??(de)干??(gan)擾??(rao)??。??。