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　　這?(zhe)一??(yi)階??(jie)段??(duan)的??(de)維??(wei)護??(hu)重??(zhong)點??(dian)包??(bao)括??(kuo)：母??(mu)乳??(ru)喂??(wei)養(yǎng)??(yang)??，至?(zhi)少??(shao)純??(chun)母??(mu)乳??(ru)喂??(wei)養(yǎng)??(yang)6個??(ge)月?(yue)??，提??(ti)供??(gong)抗??(kang)體??(ti)和??(he)益??(yi)生??(sheng)菌??(jun)??，降??(jiang)低??(di)感??(gan)染??(ran)風(fēng)??(feng)險?(xian)；按??(an)時??(shi)接??(jie)種??(zhong)百??(bai)白??(bai)破??(po)、脊?(ji)髓??(sui)灰??(hui)質(zhì)??(zhi)炎??(yan)等??(deng)基??(ji)礎(chǔ)??(chu)疫??(yi)苗?(miao)??，建??(jian)立??(li)免?(mian)疫??(yi)記??(ji)憶?(yi)；適??(shi)度??(du)“練??(lian)兵??(bing)”??，避??(bi)免??(mian)過??(guo)度??(du)消??(xiao)毒??(du)??，適?(shi)當?(dang)接??(jie)觸??(chu)環(huán)??(huan)境??(jing)微??(wei)生??(sheng)物??(wu)(如??(ru)戶??(hu)外??(wai)活??(huo)動??(dong))??，促??(cu)進??(jin)免??(mian)疫??(yi)系??(xi)統(tǒng)?(tong)發(fā)??(fa)育??(yu)??。??　　最??(zui)后?(hou)是??(shi)維??(wei)持?(chi)記??(ji)憶??(yi)??，比??(bi)如??(ru)通??(tong)過??(guo)疫??(yi)苗??(miao)或??(huo)自??(zi)然??(ran)感??(gan)染??(ran)形??(xing)成??(cheng)長??(chang)期??(qi)保??(bao)護??(hu)??，例??(li)如??(ru)天?(tian)花??(hua)疫??(yi)苗?(miao)的??(de)終??(zhong)身?(shen)免??(mian)疫??(yi)效??(xiao)果??(guo)；再??(zai)如??(ru)調(diào)??(tiao)節(jié)??(jie)T細??(xi)胞??(bao)抑??(yi)制??(zhi)過??(guo)度?(du)反??(fan)應(yīng)?(ying)??，防??(fang)止??(zhi)免??(mian)疫??(yi)系??(xi)統(tǒng)??(tong)“暴??(bao)走??(zou)”引??(yin)發(fā)??(fa)過??(guo)敏?(min)或??(huo)炎?(yan)癥??(zheng)風(fēng)??(feng)暴??(bao)??。??。