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　　這??(zhe)一?(yi)階??(jie)段??(duan)的??(de)維??(wei)護(hù)??(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(dāng)??(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(jìn)??(jin)免??(mian)疫??(yi)系??(xi)統(tǒng)??(tong)發(fā)??(fa)育?(yu)??。??　　不??(bu)同??(tong)年??(nian)齡??(ling)段??(duan)??，免??(mian)疫?(yi)維??(wei)護(hù)??(hu)的??(de)“黃??(huang)金??(jin)法??(fa)則??(ze)”。