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2021 年 1 月至 4 月,西班牙纳瓦拉地区 COVID-19 疫苗预防 SARS-CoV-2 感染和住院的有效性。

Effectiveness of COVID-19 vaccines in preventing SARS-CoV-2 infection and hospitalisation, Navarre, Spain, January to April 2021.

机构信息

Instituto de Salud Pública de Navarra, Pamplona, Spain.

CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain.

出版信息

Euro Surveill. 2021 May;26(21). doi: 10.2807/1560-7917.ES.2021.26.21.2100438.

DOI:10.2807/1560-7917.ES.2021.26.21.2100438
PMID:34047271
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8161727/
Abstract

COVID-19 vaccine effectiveness was evaluated in close contacts of cases diagnosed during January-April 2021. Among 20,961 contacts, 7,240 SARS-CoV-2 infections were confirmed, with 5,467 being symptomatic and 559 leading to hospitalisations. Non-brand-specific one and two dose vaccine effectiveness were respectively, 35% (95% confidence interval (CI): 25 to 44) and 66% (95% CI: 57 to 74) against infections, 42% (95% CI: 31 to 52) and 82% (95% CI: 74 to 88) against symptomatic infection, and 72% (95% CI: 47 to 85) and 95% (95% CI: 62 to 99) against COVID-19 hospitalisation. The second dose significantly increased effectiveness. Findings support continuing complete vaccination.

摘要

COVID-19 疫苗有效性在 2021 年 1 月至 4 月期间确诊病例的密切接触者中进行了评估。在 20961 名接触者中,有 7240 人确诊感染了 SARS-CoV-2,其中 5467 人出现症状,559 人住院。非品牌特异性的一剂和两剂疫苗有效性分别为 35%(95%置信区间:25 至 44)和 66%(95%置信区间:57 至 74),预防感染,42%(95%置信区间:31 至 52)和 82%(95%置信区间:74 至 88)预防有症状感染,以及 72%(95%置信区间:47 至 85)和 95%(95%置信区间:62 至 99)预防 COVID-19 住院。第二剂显著提高了疫苗的有效性。研究结果支持继续完全接种疫苗。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2e4/8161727/df4987a86f40/2100438-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2e4/8161727/df4987a86f40/2100438-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2e4/8161727/df4987a86f40/2100438-f1.jpg

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