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第三剂 BNT162b2 mRNA 疫苗的有效性。

Effectiveness of a Third Dose of BNT162b2 mRNA Vaccine.

机构信息

Division of Data and Digital Health, Maccabi HealthCare Services, Tel Aviv-Jaffa, Israel.

出版信息

J Infect Dis. 2022 Jan 5;225(1):30-33. doi: 10.1093/infdis/jiab556.

Abstract

A retrospective cohort study was carried out in a large Israeli health maintenance organization to determine vaccine effectiveness (VE) of a third dose of BNT162b2 vaccine against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Of nearly 1 million members receiving 2 doses of BNT162b2 in January-February 2021, infection rates (based on polymerase chain reaction results) were compared between those who received a third dose with those who did not during August-October 2021 (maximum, 70 days). Crude VE was 92.9% (95% confidence interval [CI], 92.6%-93.2%) and adjusted VE was 89.1% (95% CI, 87.5%-90.5%). We conclude that the third dose provides added protection against SARS-CoV-2 infection for those vaccinated 6 months ago.

摘要

一项在以色列大型健康维护组织中进行的回顾性队列研究旨在确定第三剂 BNT162b2 疫苗对严重急性呼吸综合征冠状病毒 2(SARS-CoV-2)感染的疫苗有效性(VE)。在 2021 年 1 月至 2 月期间,近 100 万名接受了 2 剂 BNT162b2 接种的成员中,在 2021 年 8 月至 10 月期间(最长 70 天),比较了接受第三剂疫苗接种者和未接受第三剂疫苗接种者的感染率(基于聚合酶链反应结果)。未经调整的 VE 为 92.9%(95%置信区间[CI],92.6%-93.2%),调整后的 VE 为 89.1%(95% CI,87.5%-90.5%)。我们的结论是,对于 6 个月前接种疫苗的人来说,第三剂疫苗提供了针对 SARS-CoV-2 感染的额外保护。

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Effectiveness of a Third Dose of BNT162b2 mRNA Vaccine.第三剂 BNT162b2 mRNA 疫苗的有效性。
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