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　　0～18歲??(sui)??，筑??(zhu)牢??(lao)免??(mian)疫??(yi)根??(gen)基??(ji)??。??　　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??(wu)法??(fa)及??(ji)時(shí)??(shi)清??(qing)除??(chu)突??(tu)變??(bian)細(xì)??(xi)胞??(bao)?。JPGWSZYVAOqibao666888　　0～18sui ??(sui)??，zhu ??(zhu)lao ??(lao)mian ??(mian)yi ??(yi)gen ??(gen)ji ??(ji)??。??　　lao ??(lao)nian ??(nian)qi ??(qi)mian ??(mian)yi ??(yi)xi ?(xi)tong ??(tong)ru ?(ru)tong ??(tong)“l(fā)ao ??(lao)bing ??(bing)”??，jing ??(jing)yan ??(yan)feng ??(feng)fu ??(fu)dan ??(dan)ji ??(ji)neng ??(neng)shuai ??(shuai)tui ??(tui)??，xu ??(xu)zhen ??(zhen)dui ??(dui)xing ??(xing)wei ??(wei)hu ??(hu)yi ??(yi)jiang ??(jiang)di ??(di)zhong ??(zhong)zheng ??(zheng)feng ??(feng)xian ??(xian)?。??zhe ??(zhe)yi ??(yi)shi ??(shi)qi ??(qi)de ??(de)mian ??(mian)yi ??(yi)te ??(te)dian ??(dian)??，yi ??(yi)shi ?(shi)Txi ??(xi)bao ??(bao)gong ??(gong)neng ??(neng)tui ??(tui)hua ??(hua)??，ji ??(ji)yi ??(yi)Txi ??(xi)bao ??(bao)zhu ??(zhu)dao ??(dao)??，dan ??(dan)qing ??(qing)chu ??(chu)bing ?(bing)yuan ??(yuan)ti ??(ti)neng ?(neng)li ??(li)xia ??(xia)jiang ??(jiang)；er ??(er)shi ??(shi)kang ?(kang)ti ??(ti)zhi ??(zhi)liang ??(liang)jiang ??(jiang)di ??(di)??，yi ??(yi)miao ??(miao)ying ??(ying)da ??(da)jian ??(jian)ruo ??(ruo)??，gan ??(gan)ran ??(ran)(ru ?(ru)fei ??(fei)yan ??(yan)、dai ??(dai)zhuang ??(zhuang)pao ??(pao)zhen ??(zhen))yi ??(yi)zhong ??(zhong)zheng ??(zheng)hua ??(hua)；san ??(san)shi ?(shi)shuai ??(shuai)lao ??(lao)xiang ??(xiang)guan ??(guan)ji ??(ji)bing ??(bing)fa ??(fa)bing ??(bing)feng ?(feng)xian ??(xian)shang ??(shang)sheng ??(sheng)：mian ??(mian)yi ??(yi)jian ??(jian)shi ??(shi)gong ??(gong)neng ??(neng)jian ??(jian)ruo ??(ruo)??，wu ??(wu)fa ??(fa)ji ??(ji)shi ??(shi)qing ??(qing)chu ??(chu)tu ??(tu)bian ??(bian)xi ??(xi)bao ??(bao)?。