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　　免??(mian)疫??(yi)系??(xi)統(tǒng)??(tong)如?(ru)何??(he)守??(shou)護??(hu)我??(wo)們??(men)的?(de)健??(jian)康??(kang)　　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??(yan)豐??(feng)富??(fu)但?(dan)機??(ji)能??(neng)衰??(shuai)退?(tui)??，需??(xu)針??(zhen)對??(dui)性??(xing)維??(wei)護??(hu)以?(yi)降??(jiang)低??(di)重??(zhong)癥??(zheng)風(fēng)??(feng)險??(xian)??。??這??(zhe)一??(yi)時?(shi)期??(qi)的??(de)免??(mian)疫??(yi)特?(te)點?(dian)??，一??(yi)是??(shi)T細??(xi)胞??(bao)功??(gong)能??(neng)退??(tui)化??(hua)??，記??(ji)憶??(yi)T細??(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)老祝(lao)相??(xiang)關(guān)??(guan)疾??(ji)病??(bing)發(fā)?(fa)病??(bing)風(fēng)??(feng)險??(xian)上??(shang)升??(sheng)：免??(mian)疫??(yi)監(jiān)??(jian)視??(shi)功??(gong)能??(neng)減??(jian)弱??(ruo)??，無??(wu)法??(fa)及??(ji)時??(shi)清?(qing)除??(chu)突??(tu)變??(bian)細??(xi)胞??(bao)??。。