近日，浙江、河南以及廣東地區(qū)的衛(wèi)生健康部門(mén)先后發(fā)布信息表示，將從本月起啟動(dòng)新冠疫苗加強(qiáng)針的接種。

Guangdong, Zhejiang and Henan provinces will start administering booster doses of vaccine to residents this month to strengthen their immunity to COVID-19 as sporadic outbreaks are reported in some parts of China. Those targeted for a third dose are people aged 18 to 59 who received two doses of inactivated coronavirus vaccine at least six months ago, authorities said.
近期，國(guó)內(nèi)部分地區(qū)報(bào)告新冠肺炎散發(fā)病例，廣東、浙江以及河南省將從本月起開(kāi)始新冠疫苗加強(qiáng)針接種工作，以加強(qiáng)民眾的免疫力。第三針接種將面向已完成兩劑次滅活疫苗接種6個(gè)月以上的18-59歲人群。

【知識(shí)點(diǎn)】

所謂疫苗加強(qiáng)針（booster shot/booster dose），是指在完成疫苗接種后，根據(jù)抗體消退的情況進(jìn)行補(bǔ)充接種，保持人體對(duì)病毒免疫力的疫苗劑次。這里的核心詞booster，來(lái)源于動(dòng)詞boost，主要表示“加強(qiáng)、促進(jìn)、推動(dòng)”等意思，比如boost production（促生產(chǎn)），boost morale（提振士氣）等，在這里表示“increase or renew the effect of the vaccine”，即“增強(qiáng)疫苗產(chǎn)生的效果”。

廣東汕尾：六類(lèi)重點(diǎn)人群可接種加強(qiáng)針

The city health commission in Shanwei, Guangdong province, said on Thursday that priority for the booster shot will be given to front-line personnel at medical institutions and workers in government departments, law enforcement, public services, customs, border ports, harbors, the cold-chain industry and those who want to study or work abroad.
廣東省汕尾市衛(wèi)健部門(mén)9月23日表示，將面向一線醫(yī)療衛(wèi)生人員，政府機(jī)關(guān)、執(zhí)法部門(mén)、公共服務(wù)、海關(guān)、口岸、冷鏈等行業(yè)工作人員，以及出國(guó)工作學(xué)習(xí)人員等重點(diǎn)人群開(kāi)展加強(qiáng)針接種。

加強(qiáng)針效果如何？

Research has shown that a person's antibody level will be increased more than tenfold if a third dose of vaccine is given more than six months after the second, and that immunity will be maintained at a relatively high level for another six months.
研究發(fā)現(xiàn)，接種疫苗第二劑后6個(gè)月再接種一劑，抗體水平增幅達(dá)到十多倍。 接種后，再過(guò)6個(gè)月還能維持在比較高的水平。

【相關(guān)詞匯】

免疫屏障
immunity barrier

有效性和安全性研究
safety and efficacy research

常態(tài)化疫情防控
regular epidemic prevention and control

輸入病例
imported COVID-19 cases

本土病例
locally transmitted cases

無(wú)癥狀感染者
asymptomatic cases

傳染病檢疫及監(jiān)測(cè)
quarantining and monitoring of infectious diseases

流行病學(xué)調(diào)查
epidemiological investigation

集中觀察
concentrated observation

外防輸入、內(nèi)防反彈
to prevent the coronavirus from re-entering the country to cause a new epidemic

早發(fā)現(xiàn)、早報(bào)告、早隔離、早治療“四早”措施
the principle of early detection, reporting, quarantine and treatment

參考來(lái)源：中國(guó)日?qǐng)?bào)、環(huán)球網(wǎng)

（中國(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津 Helen）