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

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，國內(nèi)部分地區(qū)報告新冠肺炎散發(fā)病例，廣東、浙江以及河南省將從本月起開始新冠疫苗加強針接種工作，以加強民眾的免疫力。第三針接種將面向已完成兩劑次滅活疫苗接種6個月以上的18-59歲人群。

【知識點】

所謂疫苗加強針（booster shot/booster dose），是指在完成疫苗接種后，根據(jù)抗體消退的情況進行補充接種，保持人體對病毒免疫力的疫苗劑次。這里的核心詞booster，來源于動詞boost，主要表示“加強、促進、推動”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“增強疫苗產(chǎn)生的效果”。

廣東汕尾：六類重點人群可接種加強針

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9月23日表示，將面向一線醫(yī)療衛(wèi)生人員，政府機關(guān)、執(zhí)法部門、公共服務(wù)、海關(guān)、口岸、冷鏈等行業(yè)工作人員，以及出國工作學(xué)習人員等重點人群開展加強針接種。

加強針效果如何？

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個月再接種一劑，抗體水平增幅達到十多倍。 接種后，再過6個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

無癥狀感染者
asymptomatic cases

傳染病檢疫及監(jiān)測
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)、早報告、早隔離、早治療“四早”措施
the principle of early detection, reporting, quarantine and treatment

參考來源：中國日報、環(huán)球網(wǎng)

（中國日報網(wǎng)英語點津 Helen）