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Abstract

By employing a common protocol and data from electronic health registries in Denmark, Navarre (Spain), Norway and Portugal, we estimated vaccine effectiveness (VE) against hospitalisation due to COVID-19 in individuals aged ≥ 65 years old, without previous documented infection, between October 2021 and March 2022. VE was higher in 65–79-year-olds compared with ≥ 80-year-olds and in those who received a booster compared with those who were primary vaccinated. VE remained high (ca 80%) between ≥ 12 and < 24 weeks after the first booster administration, and after Omicron became dominant.

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/content/10.2807/1560-7917.ES.2022.27.30.2200551
2022-07-28
2024-04-18
http://instance.metastore.ingenta.com/content/10.2807/1560-7917.ES.2022.27.30.2200551
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Estimation of COVID-19 vaccine effectiveness against hospitalisation in individuals aged ≥ 65 years using electronic health registries; a pilot study in four EU/EEA countries, October 2021 to March 2022
<p class="citation"> <span>Citation style for this article:</span> <span class="meta-value authors"> <a href="/search?value1=Alexis+Sent%C3%ADs&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Sentís Alexis</a>, <a href="/search?value1=Irina+Kislaya&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Kislaya Irina</a>, <a href="/search?value1=Nathalie+Nicolay&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Nicolay Nathalie</a>, <a href="/search?value1=Hinta+Meijerink&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Meijerink Hinta</a>, <a href="/search?value1=Jostein+Starrfelt&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Starrfelt Jostein</a>, <a href="/search?value1=Iv%C3%A1n+Mart%C3%ADnez-Baz&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Martínez-Baz Iván</a>, <a href="/search?value1=Jes%C3%BAs+Castilla&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Castilla Jesús</a>, <a href="/search?value1=Katrine+Finderup+Nielsen&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Nielsen Katrine Finderup</a>, <a href="/search?value1=Christian+Holm+Hansen&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Hansen Christian Holm</a>, <a href="/search?value1=Hanne-Dorthe+Emborg&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Emborg Hanne-Dorthe</a>, <a href="/search?value1=Anthony+Nardone&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Nardone Anthony</a>, <a href="/search?value1=Tarik+Derrough&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Derrough Tarik</a>, <a href="/search?value1=Marta+Valenciano&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Valenciano Marta</a>, <a href="/search?value1=Baltazar+Nunes&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Nunes Baltazar</a>, <a href="/search?value1=Susana+Monge&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Monge Susana</a>, <a href="/search?value1=the+VEBIS-Lot4+working+group&option1=author&noRedirect=true" class="nonDisambigAuthorLink">the VEBIS-Lot4 working group</a></span>. Estimation of COVID-19 vaccine effectiveness against hospitalisation in individuals aged ≥ 65 years using electronic health registries; a pilot study in four EU/EEA countries, October 2021 to March 2022. <a href="/content/ecdc">Euro Surveill.</a> 2022;27(30):pii=2200551. <a href="https://doi.org/10.2807/1560-7917.ES.2022.27.30.2200551" title="doi link" target="_blank">https://doi.org/10.2807/1560-7917.ES.2022.27.30.2200551</a> <span class="ES_Article_citation"> <span class="generated">Received</span>: 08 Jul 2022;&nbsp;&nbsp; <span class="generated">Accepted</span>: 28 Jul 2022 </span> </p>
/content/10.2807/1560-7917.ES.2022.27.30.2200551
/content/10.2807/1560-7917.ES.2022.27.30.2200551
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