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Page 1
Epidemiological characterisation of the first 785 SARS-CoV-2 Omicron variant cases in Denmark, December 2021.
Espenhain L, Funk T, Overvad M, Edslev SM, Fonager J, Ingham AC, Rasmussen M, Madsen SL, Espersen CH, Sieber RN, Stegger M, Gunalan V, Wilkowski B, Larsen NB, Legarth R, Cohen AS, Nielsen F, Lam JUH, Lavik KE, Karakis M, Spiess K, Marving E, Nielsen C, Wiid Svarrer C, Bybjerg-Grauholm J, Olsen SS, Jensen A, Krause TG, Müller L. Espenhain L, et al. Among authors: espersen ch. Euro Surveill. 2021 Dec;26(50):2101146. doi: 10.2807/1560-7917.ES.2021.26.50.2101146. Euro Surveill. 2021. PMID: 34915977 Free PMC article.
Association Between Pulmonary Vascular Volume and Cardiac Structure and Function in Patients With Atrial Fibrillation.
Nielsen AB, Skaarup KG, Djernæs K, Duus LS, Espersen C, Sørensen SK, Ruwald MH, Hansen ML, Worck RH, Johannessen A, Hansen J, Nardelli P, San José Estépar R, San José Estépar R, Biering-Sørensen T. Nielsen AB, et al. Am J Cardiol. 2023 Oct 15;205:182-189. doi: 10.1016/j.amjcard.2023.07.119. Epub 2023 Aug 19. Am J Cardiol. 2023. PMID: 37604065 Free article.
Normal age- and sex-based values of right ventricular free wall and four-chamber longitudinal strain by speckle-tracking echocardiography: from the Copenhagen City heart study.
Espersen C, Skaarup KG, Lassen MCH, Johansen ND, Hauser R, Olsen FJ, Jensen GB, Schnohr P, Møgelvang R, Biering-Sørensen T. Espersen C, et al. Clin Res Cardiol. 2024 Mar;113(3):456-468. doi: 10.1007/s00392-023-02333-x. Epub 2023 Nov 15. Clin Res Cardiol. 2024. PMID: 37968333 Free PMC article.
Bivalent RSV Prefusion F Protein-Based Vaccine for Preventing Cardiovascular Hospitalizations in Older Adults: A Prespecified Analysis of the DAN-RSV Trial.
Lassen MCH, Johansen ND, Christensen SH, Aliabadi N, Skaarup KG, Modin D, Claggett BL, Larsen CS, Larsen L, Wiese L, Dalager-Pedersen M, Lindholm MG, Jensen AMR, Dons M, Bernholm KF, Davidovski FS, Duus LS, Ottosen CI, Nielsen AB, Borchsenius JH, Espersen C, Köse G, Fussing FH, Pareek M, Køber L, Solomon SD, Jensen JUS, Martel CJ, Gessner BD, Schwarz C, Gonzalez E, Skovdal M, Moulton LH, Zhang P, Begier E, Biering-Sørensen T. Lassen MCH, et al. JAMA. 2025 Oct 28;334(16):1431-1441. doi: 10.1001/jama.2025.15405. JAMA. 2025. PMID: 40884493 Clinical Trial.
High-Dose Influenza Vaccine Effectiveness against Hospitalization in Older Adults.
Johansen ND, Modin D, Loiacono MM, Harris RC, Dufournet M, Larsen CS, Larsen L, Wiese L, Dalager-Pedersen M, Claggett BL, Janstrup KH, Bartholdy KV, Bernholm KF, Borchsenius JIH, Davidovski FS, Davodian LW, Dons M, Duus LS, Espersen C, Fussing FH, Jensen AMR, Landler NE, Langhoff ACF, Lassen MCH, Nielsen AB, Ottosen CI, Sengeløv M, Skaarup KG, Solomon SD, Landray MJ, Gislason GH, Køber L, Ralfkiaer L, Nealon J, Sivapalan P, Martel CJ, Jensen JUS, Biering-Sørensen T. Johansen ND, et al. N Engl J Med. 2025 Dec 11;393(23):2291-2302. doi: 10.1056/NEJMoa2509907. Epub 2025 Aug 30. N Engl J Med. 2025. PMID: 40888720 Clinical Trial.
High-Dose vs Standard-Dose Influenza Vaccine and Cardiovascular Outcomes in Older Adults: A Prespecified Secondary Analysis of the DANFLU-2 Randomized Clinical Trial.
Johansen ND, Modin D, Loiacono MM, Harris RC, Dufournet M, Larsen CS, Larsen L, Wiese L, Dalager-Pedersen M, Claggett BL, Janstrup KH, Bartholdy KV, Bernholm KF, Borchsenius JIH, Davidovski FS, Davodian LW, Dons M, Duus LS, Espersen C, Fussing FH, Jensen AMR, Landler NE, Langhoff ACF, Lassen MCH, Nielsen AB, Ottosen CI, Sengeløv M, Skaarup KG, Pareek M, Solomon SD, Landray MJ, Gislason GH, Køber L, Sivapalan P, Martel CJ, Jensen JUS, Biering-Sørensen T. Johansen ND, et al. JAMA Cardiol. 2025 Nov 1;10(11):1186-1194. doi: 10.1001/jamacardio.2025.3460. JAMA Cardiol. 2025. PMID: 40884442 Free PMC article. Clinical Trial.
RSV Prefusion F Vaccine for Prevention of Hospitalization in Older Adults.
Lassen MCH, Johansen ND, Christensen SH, Aliabadi N, Skaarup KG, Modin D, Claggett BL, Larsen CS, Larsen L, Wiese L, Dalager-Pedersen M, Lindholm MG, Jensen AMR, Dons M, Bernholm KF, Davidovski FS, Duus LS, Ottosen CI, Nielsen AB, Borchsenius JH, Espersen C, Köse G, Fussing FH, Køber L, Solomon SD, Jensen JUS, Martel CJ, Gessner BD, Schwarz C, Gonzalez E, Skovdal M, Moulton LH, Zhang P, Begier E, Biering-Sørensen T. Lassen MCH, et al. N Engl J Med. 2026 Jan 8;394(2):138-151. doi: 10.1056/NEJMoa2509810. Epub 2025 Aug 30. N Engl J Med. 2026. PMID: 40888695 Clinical Trial.
Relative Effectiveness of High-Dose Versus Standard-Dose Influenza Vaccination Against Hospitalizations and Deaths According to Frailty Score: A Post Hoc Analysis of the DANFLU-1 Randomized Trial.
Espersen C, Johansen ND, Modin D, Janstrup KH, Nealon J, Samson S, Loiacono MM, Harris RC, Andrew MK, Larsen CS, Jensen AMR, Landler NE, Claggett BL, Solomon SD, Landray MJ, Gislason GH, Køber L, Jensen JUS, Sivapalan P, Biering-Sørensen T. Espersen C, et al. J Infect Dis. 2026 Jan 17;233(1):e89-e98. doi: 10.1093/infdis/jiaf420. J Infect Dis. 2026. PMID: 40796377 Free PMC article. Clinical Trial.
Effect of RSV Vaccine on Heart Failure Hospitalizations: A Prespecified Analysis of the DAN-RSV Trial.
Skaarup KG, Lassen MCH, Johansen ND, Christensen SH, Aliabadi N, Modin D, Claggett BL, Larsen CS, Larsen L, Wiese L, Dalager-Pedersen M, Lindholm MG, Jensen AMR, Dons M, Bernholm KF, Davidovski FS, Duus LS, Ottosen CI, Nielsen AB, Borchsenius JH, Espersen C, Köse G, Fussing FH, Køber L, Solomon SD, Jensen JUS, Martel CJ, Mebazaa A, Gessner BD, Schwarz C, Gonzalez E, Skovdal M, Zhang P, Begier E, Biering-Sørensen T. Skaarup KG, et al. J Am Coll Cardiol. 2025 Nov 25;86(21):2062-2067. doi: 10.1016/j.jacc.2025.08.023. Epub 2025 Aug 30. J Am Coll Cardiol. 2025. PMID: 40884521 Free article. No abstract available.
Relative vaccine effectiveness of high-dose vs. standard-dose influenza vaccine against clinical outcomes according to history of atrial fibrillation: a pre-specified analysis of the DANFLU-1 randomized trial.
Espersen C, Johansen ND, Modin D, Janstrup KH, Loiacono MM, Harris RC, Biering-Sørensen T. Espersen C, et al. Eur Heart J Open. 2025 Aug 21;5(5):oeaf102. doi: 10.1093/ehjopen/oeaf102. eCollection 2025 Sep. Eur Heart J Open. 2025. PMID: 40927272 Free PMC article.
Excess morbidity and mortality associated with seasonal influenza in patients with atrial fibrillation.
Espersen C, Modin D, Claggett BL, Solomon SD, Trebbien R, Krause TG, Stæhr Jensen JU, Andersen MP, Marcus GM, Torp-Pedersen C, Gislason GH, Hansen J, Johannessen A, Biering-Sørensen T. Espersen C, et al. Heart Rhythm. 2026 Jan 10:S1547-5271(26)00030-5. doi: 10.1016/j.hrthm.2025.12.050. Online ahead of print. Heart Rhythm. 2026. PMID: 41525969 No abstract available.
High-dose vs. standard-dose inactivated influenza vaccine and cardiovascular outcomes in persons with or without pre-existing atherosclerotic cardiovascular disease: the DANFLU-2 trial.
Pareek M, Johansen ND, Modin D, Loiacono MM, Harris RC, Dufournet M, Larsen CS, Larsen L, Wiese L, Dalager-Pedersen M, Claggett BL, Janstrup KH, Bartholdy KV, Bernholm KF, Borchsenius JIH, Davidovski FS, Davodian LW, Dons M, Duus LS, Espersen C, Fussing FH, Jensen AMR, Landler NE, Langhoff ACF, Lassen MCH, Nielsen AB, Ottosen CI, Sengeløv M, Skaarup KG, Solomon SD, Landray MJ, Gislason GH, Køber L, Sivapalan P, Martel CJ, Jensen JUS, Biering-Sørensen T. Pareek M, et al. Eur Heart J. 2025 Nov 3;46(41):4282-4290. doi: 10.1093/eurheartj/ehaf678. Eur Heart J. 2025. PMID: 40884413 Free PMC article. Clinical Trial.
Effectiveness of bivalent respiratory syncytial virus prefusion F protein-based vaccine in individuals with or without atherosclerotic cardiovascular disease: the DAN-RSV trial.
Pareek M, Lassen MCH, Johansen ND, Christensen SH, Aliabadi N, Skaarup KG, Modin D, Claggett BL, Larsen CS, Larsen L, Wiese L, Dalager-Pedersen M, Lindholm MG, Jensen AMR, Dons M, Bernholm KF, Davidovski FS, Duus LS, Ottosen CI, Nielsen AB, Borchsenius JH, Espersen C, Köse G, Fussing FH, Køber L, Solomon SD, Jensen JUS, Martel CJ, Gessner BD, Schwarz C, Gonzalez E, Skovdal M, Zhang P, Begier E, Biering-Sørensen T. Pareek M, et al. Eur Heart J. 2025 Nov 3;46(41):4291-4298. doi: 10.1093/eurheartj/ehaf679. Eur Heart J. 2025. PMID: 40884439 Free PMC article. Clinical Trial.
Lung ultrasound findings in hospitalized COVID-19 patients in relation to venous thromboembolic events: the ECHOVID-19 study.
Skaarup KG, Lassen MCH, Espersen C, Lind JN, Johansen ND, Sengeløv M, Alhakak AS, Nielsen AB, Ravnkilde K, Hauser R, Schöps LB, Holt E, Bundgaard H, Hassager C, Jabbari R, Carlsen J, Kirk O, Bodtger U, Lindholm MG, Wiese L, Kristiansen OP, Walsted ES, Nielsen OW, Lindegaard B, Tønder N, Jeschke KN, Ulrik CS, Lamberts M, Sivapalan P, Pallisgaard J, Gislason G, Iversen K, Jensen JUS, Schou M, Skaarup SH, Platz E, Biering-Sørensen T. Skaarup KG, et al. J Ultrasound. 2022 Sep;25(3):457-467. doi: 10.1007/s40477-021-00605-8. Epub 2021 Jul 2. J Ultrasound. 2022. PMID: 34213740 Free PMC article.
Effectiveness of high-dose influenza vaccine against hospitalisations in older adults (FLUNITY-HD): an individual-level pooled analysis.
Johansen ND, Modin D, Pardo-Seco J, Rodriguez-Tenreiro-Sánchez C, Loiacono MM, Harris RC, Dufournet M, van Aalst R, Chit A, Larsen CS, Larsen L, Wiese L, Dalager-Pedersen M, Claggett BL, Janstrup KH, Duran-Parrondo C, Piñeiro-Sotelo M, Cribeiro-González M, Conde-Pájaro M, Mirás-Carballal S, González-Pérez JM, Solomon SD, Sivapalan P, Martel CJ, Jensen JUS, Martinón-Torres F, Biering-Sørensen T; DANFLU-2 Study Group; GALFLU Trial Team. Johansen ND, et al. Lancet. 2025 Nov 22;406(10518):2425-2434. doi: 10.1016/S0140-6736(25)01742-8. Epub 2025 Oct 17. Lancet. 2025. PMID: 41115437 Clinical Trial.
Myocardial Impairment and Acute Respiratory Distress Syndrome in Hospitalized Patients With COVID-19: The ECHOVID-19 Study.
Skaarup KG, Lassen MCH, Lind JN, Alhakak AS, Sengeløv M, Nielsen AB, Espersen C, Hauser R, Schöps LB, Holt E, Johansen ND, Modin D, Sharma S, Graff C, Bundgaard H, Hassager C, Jabbari R, Lebech AM, Kirk O, Bødtger U, Lindholm MG, Joseph G, Wiese L, Schiødt FV, Kristiansen OP, Walsted ES, Nielsen OW, Madsen BL, Tønder N, Benfield TL, Jeschke KN, Ulrik CS, Knop FK, Pallisgaard J, Lamberts M, Sivapalan P, Gislason G, Solomon SD, Iversen K, Jensen JUS, Schou M, Biering-Sørensen T. Skaarup KG, et al. JACC Cardiovasc Imaging. 2020 Nov;13(11):2474-2476. doi: 10.1016/j.jcmg.2020.08.005. Epub 2020 Aug 27. JACC Cardiovasc Imaging. 2020. PMID: 32994145 Free PMC article. No abstract available.
High-Dose vs Standard-Dose Influenza Vaccine in Older Adults With Atrial Fibrillation: A Prespecified Analysis of the DANFLU-2 Trial.
Espersen C, Johansen ND, Modin D, Loiacono MM, Harris RC, Dufournet M, Larsen CS, Larsen L, Wiese L, Dalager-Pedersen M, Claggett BL, Bartholdy KV, Bernholm KF, Borchsenius JIH, Davidovski FS, Davodian LW, Dons M, Duus LS, Fussing FH, Reimer Jensen AM, Landler NE, Femerling Langhoff AC, Lassen MCH, Nielsen AB, Ottosen CI, Sengeløv M, Skaarup KG, Solomon SD, Landray MJ, Gislason GH, Køber L, Sivapalan P, Martel CJ, Jensen JUS, Biering-Sørensen T. Espersen C, et al. J Am Coll Cardiol. 2025 Dec 23;86(25):2651-2655. doi: 10.1016/j.jacc.2025.09.1578. Epub 2025 Nov 26. J Am Coll Cardiol. 2025. PMID: 41295941 Free article. No abstract available.
High-Dose Versus Standard-Dose Influenza Vaccine in Heart Failure: A Prespecified Analysis of the DANFLU-2 Trial.
Skaarup KG, Johansen ND, Modin D, Loiacono MM, Harris RC, Dufournet M, Larsen CS, Larsen L, Wiese L, Dalager-Pedersen M, Claggett BL, Bartholdy KV, Bernholm KF, Borchsenius JIH, Davidovski FS, Davodian LW, Dons M, Duus LS, Espersen C, Fussing FH, Jensen AMR, Landler NE, Langhoff ACF, Lassen MCH, Nielsen AB, Ottosen CI, Sengeløv M, Solomon SD, Landray MJ, Gislason GH, Køber L, Sivapalan P, Martel CJ, Jensen JUS, Mebazaa A, Biering-Sørensen T. Skaarup KG, et al. Circ Heart Fail. 2025 Nov;18(11):e013678. doi: 10.1161/CIRCHEARTFAILURE.125.013678. Epub 2025 Aug 30. Circ Heart Fail. 2025. PMID: 40884411 Clinical Trial.
Circulation Global Rounds: Denmark.
Espersen C, Reimer Jensen AM, Biering-Sørensen T. Espersen C, et al. Circulation. 2025 Apr 8;151(14):973-975. doi: 10.1161/CIRCULATIONAHA.124.071545. Epub 2025 Apr 7. Circulation. 2025. PMID: 40193535 Free article. No abstract available.
Echocardiographic abnormalities and predictors of mortality in hospitalized COVID-19 patients: the ECHOVID-19 study.
Lassen MCH, Skaarup KG, Lind JN, Alhakak AS, Sengeløv M, Nielsen AB, Espersen C, Ravnkilde K, Hauser R, Schöps LB, Holt E, Johansen ND, Modin D, Djernaes K, Graff C, Bundgaard H, Hassager C, Jabbari R, Carlsen J, Lebech AM, Kirk O, Bodtger U, Lindholm MG, Joseph G, Wiese L, Schiødt FV, Kristiansen OP, Walsted ES, Nielsen OW, Madsen BL, Tønder N, Benfield T, Jeschke KN, Ulrik CS, Knop FK, Lamberts M, Sivapalan P, Gislason G, Marott JL, Møgelvang R, Jensen G, Schnohr P, Søgaard P, Solomon SD, Iversen K, Jensen JUS, Schou M, Biering-Sørensen T. Lassen MCH, et al. ESC Heart Fail. 2020 Dec;7(6):4189-4197. doi: 10.1002/ehf2.13044. Epub 2020 Oct 22. ESC Heart Fail. 2020. PMID: 33089972 Free PMC article.
Lung Ultrasound Findings Associated With COVID-19 ARDS, ICU Admission, and All-Cause Mortality.
Espersen C, Platz E, Skaarup KG, Lassen MCH, Lind JN, Johansen ND, Sengeløv M, Alhakak AS, Nielsen AB, Bundgaard H, Hassager C, Jabbari R, Carlsen J, Kirk O, Lindholm MG, Kristiansen OP, Nielsen OW, Jeschke KN, Ulrik CS, Sivapalan P, Gislason G, Iversen K, Jensen JUS, Schou M, Skaarup SH, Biering-Sørensen T. Espersen C, et al. Respir Care. 2022 Jan;67(1):66-75. doi: 10.4187/respcare.09108. Epub 2021 Nov 23. Respir Care. 2022. PMID: 34815326 Free PMC article.
Lung ultrasound findings following COVID-19 hospitalization: A prospective longitudinal cohort study.
Espersen C, Platz E, Alhakak AS, Sengeløv M, Simonsen JØ, Johansen ND, Davidovski FS, Christensen J, Bundgaard H, Hassager C, Jabbari R, Carlsen J, Kirk O, Lindholm MG, Kristiansen OP, Nielsen OW, Jeschke KN, Ulrik CS, Sivapalan P, Iversen K, Stæhr Jensen JU, Schou M, Skaarup SH, Højbjerg Lassen MC, Skaarup KG, Biering-Sørensen T. Espersen C, et al. Respir Med. 2022 Jun;197:106826. doi: 10.1016/j.rmed.2022.106826. Epub 2022 Apr 2. Respir Med. 2022. PMID: 35453059 Free PMC article.
High-Dose vs. Standard-Dose Influenza Vaccine in Older Patients With Hypertension: A Post Hoc Analysis of DANFLU-1.
Langhoff AF, Johansen ND, Modin D, Janstrup KH, Bartholdy KV, Espersen C, Nealon J, Samson S, Loiacono MM, Harris R, Larsen CS, Jensen AMR, Landler NE, Claggett BL, Solomon SD, Landray MJ, Gislason GH, Køber L, Sivapalan P, Jensen JUS, Biering-Sørensen T. Langhoff AF, et al. J Clin Hypertens (Greenwich). 2025 Nov;27(11):e70177. doi: 10.1111/jch.70177. J Clin Hypertens (Greenwich). 2025. PMID: 41238377 Free PMC article. Clinical Trial.
High-Dose vs Standard-Dose Influenza Vaccine in Chronic Kidney Disease: The DANFLU-2 Trial Subgroup Analysis.
Bartholdy KV, Johansen ND, Modin D, Loiacono MM, Harris RC, Dufournet M, Larsen CS, Larsen L, Wiese L, Dalager-Pedersen M, Claggett BL, Bernholm KF, Borchsenius JIH, Davidovski FS, Davodian LW, Dons MF, Duus LS, Espersen C, Fussing FH, Jensen AMR, Landler NE, Langhoff ACF, Lassen MCH, Nielsen AB, Ottosen CI, Sengeløv M, Skaarup KG, Solomon SD, Landray MJ, Gislason GH, Køber L, Sivapalan P, Martel CJ, Jensen JUS, Biering-Sørensen T. Bartholdy KV, et al. J Am Coll Cardiol. 2025 Dec 23;86(25):2636-2647. doi: 10.1016/j.jacc.2025.10.005. Epub 2025 Nov 26. J Am Coll Cardiol. 2025. PMID: 41295932 Free article. Clinical Trial.
High-Dose vs Standard-Dose Influenza Vaccine in Older Adults With Diabetes: A Secondary Analysis of the DANFLU-2 Randomized Clinical Trial.
Nielsen AB, Johansen ND, Modin D, Loiacono MM, Harris RC, Dufournet M, Larsen CS, Larsen L, Wiese L, Dalager-Pedersen M, Claggett BL, Janstrup KH, Bartholdy KV, Bernholm KF, Borchsenius JIH, Davidovski FS, Davodian LW, Dons M, Duus LS, Espersen C, Fussing FH, Jensen AMR, Landler NE, Langhoff ACF, Lassen MCH, Ottosen CI, Sengeløv M, Skaarup KG, Pareek M, Müller-Wieland D, Solomon SD, Landray MJ, Gislason GH, Køber L, Sivapalan P, Martel CJ, Jensen JUS, Biering-Sørensen T. Nielsen AB, et al. JAMA Intern Med. 2026 Jan 12:e257286. doi: 10.1001/jamainternmed.2025.7286. Online ahead of print. JAMA Intern Med. 2026. PMID: 41525066 Free PMC article.
Risk of Myocarditis or Pericarditis With High-Dose vs Standard-Dose Influenza Vaccine: A Prespecified Secondary Analysis of the Randomized DANFLU-2 Trial.
Pareek M, Johansen ND, Modin D, Loiacono MM, Harris RC, Dufournet M, Larsen CS, Larsen L, Wiese L, Dalager-Pedersen M, Claggett BL, Janstrup KH, Bartholdy KV, Bernholm KF, Borchsenius JIH, Davidovski FS, Davodian LW, Dons M, Duus LS, Espersen C, Fussing FH, Jensen AMR, Landler NE, Langhoff ACF, Lassen MCH, Nielsen AB, Ottosen CI, Sengeløv M, Skaarup KG, Solomon SD, Landray MJ, Gislason GH, Køber L, Sivapalan P, Martel CJ, Jensen JUS, Biering-Sørensen T. Pareek M, et al. JAMA Netw Open. 2025 Aug 1;8(8):e2536889. doi: 10.1001/jamanetworkopen.2025.36889. JAMA Netw Open. 2025. PMID: 40884443 Free PMC article.