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Effectiveness of the adapted bivalent mRNA COVID-19 vaccines against hospitalisation in individuals aged ≥ 60 years during the Omicron XBB lineage-predominant period: VEBIS SARI VE network, Europe, February to August, 2023
- Liliana Antunes1 , Clara Mazagatos2,3 , Iván Martínez-Baz4,5 , Verónica Gomez6 , Maria-Louise Borg7 , Goranka Petrović8 , Róisín Duffy9 , François E Dufrasne10 , Ralf Dürrwald11 , Mihaela Lazar12 , Ligita Jancoriene13 , Beatrix Oroszi14 , Petr Husa15 , Jennifer Howard1 , Aryse Melo16 , Francisco Pozo17 , Gloria Pérez-Gimeno2,3 , Jesús Castilla4,5 , Ausenda Machado6 , Aušra Džiugytė7 , Svjetlana Karabuva18 , Margaret Fitzgerald9 , Sébastien Fierens19 , Kristin Tolksdorf20 , Silvia-Odette Popovici21 , Auksė Mickienė22 , Gergő Túri14 , Lenka Součková15 , Nathalie Nicolay23 , Angela MC Rose1 , on behalf of the European Hospital Vaccine Effectiveness Group24
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View Affiliations Hide AffiliationsAffiliations: 1 Epiconcept, Paris, France 2 National Centre for Epidemiology, Institute of Health Carlos III, Madrid, Spain 3 Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain 4 Instituto de Salud Pública de Navarra – IdiSNA, Pamplona, Spain 5 CIBER Epidemiología y Salud Pública, Madrid, Spain 6 Epidemiology Department, National Health Institute Doutor Ricardo Jorge, Lisbon, Portugal 7 Infectious Disease Prevention and Control Unit (IDCU), Health Promotion and Disease Prevention, Msida, Malta 8 Croatian Institute of Public Health, Zagreb, Croatia 9 Health Service Executive-Health Protection Surveillance Centre (HPSC), Dublin, Ireland 10 National Influenza Centre Laboratory of Viral Diseases, Sciensano, Brussels, Belgium 11 National Reference Centre for Influenza, Robert Koch Institute, Berlin, Germany 12 Cantacuzino National Military-Medical Institute for Research and Development, Bucharest, Romania 13 Clinic of Infectious Diseases and Dermatovenerology, Institute of Clinical Medicine, Medical Faculty, Vilnius University, Lithuania 14 National Laboratory for Health Security, Epidemiology and Surveillance Centre, Semmelweis University, Budapest, Hungary 15 University Hospital Brno, Masaryk University, Brno, Czechia 16 Infectious Diseases Department, National Health Institute Doutor Ricardo Jorge, Lisbon, Portugal 17 National Centre for Microbiology, Institute of Health Carlos III, Madrid, Spain 18 University Hospital Centre Split, Split, Croatia 19 Service Epidemiology of Infectious Diseases, Sciensano, Brussels, Belgium 20 Department for Infectious Disease Epidemiology, Robert Koch Institute, Berlin, Germany 21 National Institute of Public Health, National Centre for Communicable Diseases Surveillance and Control, Bucharest, Romania 22 Department of Infectious Diseases, Lithuanian University of Health Sciences, Kaunas, Lithuania 23 European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden 24 Members of the European Hospital Vaccine Effectiveness Group are listed under AcknowledgementsLiliana Antunesl.antunes epiconcept.fr
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Citation style for this article: Antunes Liliana, Mazagatos Clara, Martínez-Baz Iván, Gomez Verónica, Borg Maria-Louise, Petrović Goranka, Duffy Róisín, Dufrasne François E, Dürrwald Ralf, Lazar Mihaela, Jancoriene Ligita, Oroszi Beatrix, Husa Petr, Howard Jennifer, Melo Aryse, Pozo Francisco, Pérez-Gimeno Gloria, Castilla Jesús, Machado Ausenda, Džiugytė Aušra, Karabuva Svjetlana, Fitzgerald Margaret, Fierens Sébastien, Tolksdorf Kristin, Popovici Silvia-Odette, Mickienė Auksė, Túri Gergő, Součková Lenka, Nicolay Nathalie, Rose Angela MC, on behalf of the European Hospital Vaccine Effectiveness Group. Effectiveness of the adapted bivalent mRNA COVID-19 vaccines against hospitalisation in individuals aged ≥ 60 years during the Omicron XBB lineage-predominant period: VEBIS SARI VE network, Europe, February to August, 2023. Euro Surveill. 2024;29(3):pii=2300708. https://doi.org/10.2807/1560-7917.ES.2024.29.3.2300708 Received: 15 Dec 2023; Accepted: 18 Jan 2024
Abstract
We conducted a multicentre hospital-based test-negative case–control study to measure the effectiveness of adapted bivalent COVID-19 mRNA vaccines against PCR-confirmed SARS-CoV-2 infection during the Omicron XBB lineage-predominant period in patients aged ≥ 60 years with severe acute respiratory infection from five countries in Europe. Bivalent vaccines provided short-term additional protection compared with those vaccinated > 6 months before the campaign: from 80% (95% CI: 50 to 94) for 14–89 days post-vaccination, 15% (95% CI: −12 to 35) at 90–179 days, and lower to no effect thereafter.
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