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　　老??(lao)年??(nian)期??(qi)免??(mian)疫??(yi)系??(xi)統(tǒng)?(tong)如??(ru)同??(tong)“老?(lao)兵??(bing)”?，經(jīng)??(jing)驗(yàn)??(yan)豐??(feng)富??(fu)但??(dan)機(jī)??(ji)能??(neng)衰??(shuai)退?(tui)?，需??(xu)針??(zhen)對(duì)??(dui)性??(xing)維??(wei)護(hù)??(hu)以??(yi)降??(jiang)低??(di)重??(zhong)癥?(zheng)風(fēng)??(feng)險(xiǎn)??(xian)??。??這?(zhe)一?(yi)時(shí)??(shi)期??(qi)的??(de)免??(mian)疫??(yi)特?(te)點(diǎn)??(dian)?，一??(yi)是??(shi)T細(xì)??(xi)胞??(bao)功??(gong)能??(neng)退??(tui)化??(hua)?，記??(ji)憶??(yi)T細(xì)??(xi)胞?(bao)主??(zhu)導(dǎo)??(dao)?，但??(dan)清??(qing)除??(chu)病??(bing)原??(yuan)體??(ti)能??(neng)力??(li)下??(xia)降??(jiang)；二??(er)是??(shi)抗??(kang)體??(ti)質(zhì)??(zhi)量??(liang)降??(jiang)低??(di)?，疫??(yi)苗??(miao)應(yīng)??(ying)答??(da)減??(jian)弱?(ruo)?，感??(gan)染??(ran)(如?(ru)肺??(fei)炎??(yan)、帶??(dai)狀?(zhuang)皰??(pao)疹??(zhen))易??(yi)重??(zhong)癥??(zheng)化??(hua)；三??(san)是??(shi)衰??(shuai)老??(lao)相??(xiang)關(guān)??(guan)疾??(ji)病??(bing)發(fā)??(fa)病??(bing)風(fēng)??(feng)險(xiǎn)??(xian)上??(shang)升??(sheng)：免??(mian)疫??(yi)監(jiān)??(jian)視??(shi)功??(gong)能??(neng)減??(jian)弱??(ruo)?，無(wú)??(wu)法??(fa)及??(ji)時(shí)??(shi)清??(qing)除??(chu)突??(tu)變?(bian)細(xì)??(xi)胞??(bao)???！　∫??(yi)是??(shi)科??(ke)學(xué)??(xue)防??(fang)護(hù)?(hu)?，筑??(zhu)牢??(lao)免??(mian)疫??(yi)防??(fang)線??(xian)??。??如??(ru)按??(an)時(shí)??(shi)接??(jie)種??(zhong)流??(liu)感??(gan)疫??(yi)苗??(miao)、肺??(fei)炎??(yan)球??(qiu)菌??(jun)疫?(yi)苗?(miao)等??(deng)?，幫??(bang)助??(zhu)免??(mian)疫??(yi)系??(xi)統(tǒng)??(tong)提??(ti)前??(qian)“記?(ji)住??(zhu)”敵?(di)人??(ren)特??(te)征??(zheng)??。再??(zai)如??(ru)遠(yuǎn)??(yuan)離??(li)過??(guo)敏??(min)原??(yuan)?，對(duì)??(dui)塵??(chen)螨?(man)、花??(hua)粉??(fen)過??(guo)敏??(min)者??(zhe)?，可??(ke)使??(shi)用??(yong)防??(fang)螨??(man)寢??(qin)具??(ju)、空??(kong)氣??(qi)凈??(jing)化??(hua)器??(qi)??。。