Reduced risk of severe COVID-19 in more than 1.4 million elderly people aged 75 years and older vaccinated with mRNA-based vaccines

被引：21
作者：
Botton, Jeremie [1 ,2 ,3 ]
Dray-Spira, Rosemary [1 ,2 ]
Baricault, Berangere [1 ,2 ]
Drouin, Jerome [1 ,2 ]
Bertrand, Marion [1 ,2 ]
Jabagi, Marie-Joelle [1 ,2 ]
Weill, Alain [1 ,2 ]
Zureik, Mahmoud [1 ,2 ,4 ]
机构：
[1] French Natl Agcy Safety Med & Hlth Prod, EPI PHARE Sci Interest Grp Epidemiol Hlth Prod, St Denis, France
[2] French Natl Hlth Insurance, St Denis, France
[3] Univ Paris Saclay, Fac Pharm, F-92296 Chatenay Malabry, France
[4] Univ Paris Saclay, Antiinfect Evas & Pharmacoepidemiol, CESP, UVSQ,Univ Paris Sud,INSERM, F-78180 Montigny Le Bretonneux, France
来源：
VACCINE | 2022年 / 40卷 / 03期
关键词：
COVID-19; Effectiveness; Epidemiology; Public Health; Vaccine;
D O I：
10.1016/j.vaccine.2021.12.009
中图分类号：
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号：
100102 ;
摘要：
Randomized clinical trials have shown mRNA-based vaccines to be 92-95% effective to prevent COVID-19 in adults. We aimed to estimate the impact of vaccination on the risk of severe COVID-19 (requiring hospitalization) in elderly people. Each 1,422,461 vaccinated subject aged 75 or older was matched to two unvaccinated subjects of same age, sex, administrative region, and type of residence. They were followed from date of first injection between 27 December 2020 and 24 February 2021 to 20 March 2021 for COVID-19 hospitalization. Mean age was 82.4 years (SD, 5.7) and median follow-up was 38 days [IQR, 17-54]. Adjusted Hazard Ratio for COVID-19 hospitalization from day 7 after the second dose was estimated at 0.14 (95% confidence interval, 0.11-0.17), i.e. an estimated 86% risk reduction in people aged 75 and older, highlighting the major impact of mRNA vaccination on reducing the risk of COVID-19 among elderly people. (C) 2021 Published by Elsevier Ltd.
引用
收藏
页码：414 / 417
页数：4
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