High-Dose Influenza Vaccine Effectiveness against Hospitalization in Older Adults
In this trial, a high-dose inactivated influenza vaccine did not result in a significantly lower incidence of hospitalization for influenza or pneumonia than a standard dose among older adults. (Funded by Sanofi; DANFLU-2 ClinicalTrials.gov number, NCT05517174; EU Clinical Trials Register number, 2022-500657-17-00.).
Authors
- Line Ralfkiaer
- Nino Emanuel Landler (ORCID: https://orcid.org/0000-0001-5255-787X)
- Katja Vu Bartholdy (ORCID: https://orcid.org/0000-0001-7986-9224)
- Joshua Nealon (ORCID: https://orcid.org/0000-0003-1538-4636)
- Brian Lee Claggett (ORCID: https://orcid.org/0000-0002-4215-9218)
- Lothar Wiese (ORCID: https://orcid.org/0000-0003-2719-1743)
- Caroline Espersen (ORCID: https://orcid.org/0000-0003-2879-8862)
- Morten Sengeløv (ORCID: https://orcid.org/0000-0002-2139-8068)
- Matthew M. Loiacono (ORCID: https://orcid.org/0000-0001-8100-465X)
- Lise Witten Davodian (ORCID: https://orcid.org/0000-0003-3584-6615)
- Camilla Ikast Ottosen (ORCID: https://orcid.org/0000-0002-8446-6216)
- Anne Marie Reimer Jensen (ORCID: https://orcid.org/0000-0003-3272-636X)
- Kristoffer Grundtvig Skaarup (ORCID: https://orcid.org/0000-0002-2690-7511)
- Adam Cadovius Femerling Langhoff (ORCID: https://orcid.org/0000-0002-6073-2938)
- Lars Køber (ORCID: https://orcid.org/0000-0002-6635-1466)
- Mats Christian Højbjerg Lassen (ORCID: https://orcid.org/0000-0002-2255-582X)
- Gunnar Gislason (ORCID: https://orcid.org/0000-0002-0548-402X)
- Jens‐Ulrik Stæhr Jensen (ORCID: https://orcid.org/0000-0003-4036-0521)
- Marine Dufournet (ORCID: https://orcid.org/0009-0009-8389-4479)
- Scott David Solomon (ORCID: https://orcid.org/0000-0003-3698-9597)
- Filip Soeskov Davidovski (ORCID: https://orcid.org/0000-0002-6642-416X)
- Lisa Steen Duus (ORCID: https://orcid.org/0000-0003-4110-3199)
- Carsten Schade Larsen (ORCID: https://orcid.org/0000-0002-3963-3804)
- Anne Bjerg Nielsen (ORCID: https://orcid.org/0000-0002-0624-5936)
- Daniel Modin (ORCID: https://orcid.org/0000-0002-7566-0519)
- Kira Hyldekær Janstrup (ORCID: https://orcid.org/0000-0002-0391-5981)
- Maria Dons (ORCID: https://orcid.org/0000-0003-3506-6862)
- Cyril Jean‐Marie Martel (ORCID: https://orcid.org/0009-0004-3371-6870)
- Rebecca C. Harris (ORCID: https://orcid.org/0000-0002-2636-1520)
- Michael Dalager‐Pedersen (ORCID: https://orcid.org/0000-0002-3220-2526)
- Martin Landray (ORCID: https://orcid.org/0000-0001-6646-827X)
- Niklas Dyrby Johansen (ORCID: https://orcid.org/0000-0001-6959-3236)
- Tor Biering‐Sørensen (ORCID: https://orcid.org/0000-0003-4209-2778)
- Pradeesh Sivapalan (ORCID: https://orcid.org/0000-0002-8620-3655)
- Katrine Feldballe Bernholm (ORCID: https://orcid.org/0000-0001-5324-9430)
- Julie Borchsenius (ORCID: https://orcid.org/0000-0002-3959-7460)
- Lykke Larsen (ORCID: https://orcid.org/0000-0002-4113-4182)
- Frederik Holme Fussing
Institutions
- Statens Serum Institut (DK)
- University of Copenhagen (DK)
- Brigham and Women's Hospital (US)
- Steno Diabetes Centers (DK)
- Harvard University (US)
- Aalborg University Hospital (DK)
- Odense University Hospital (DK)
- Aarhus University Hospital (DK)
- Copenhagen University Hospital (DK)
- Gentofte Hospital (DK)
- Morristown Medical Center (US)
- Rigshospitalet (DK)
- Sanofi (France) (FR)
- University of Oxford (GB)
- Zealand University Hospital (DK)
- Heart Foundation (US)
- C3I (United States) (US)
- European Environment Agency (DK)
- University of Delaware (US)
Publication Details
- Journal
- New England Journal of Medicine
- Published
- 2025-08-30
- DOI
- https://doi.org/10.1056/nejmoa2509907
- Citations
- 27
- Primary Topic
- Influenza Virus Research Studies
- Type
- article
- Field-Weighted Citation Impact
- 36.56
Funders
- Sanofi