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Study identifier: NCT07485283 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Recombinant Herpes Zoster Vaccine for Prevention of Cardiovascular Events and Dementia

Condition: Cardiovascular Disease · Dementia  ·  Sponsor: Tor Biering-Sørensen

PhasePhase 4
Planned participants162000
Who can joinAll sexes, 65 Years to no upper limit
Healthy volunteersYes

About this study

DAN-ZOSTER is a nationwide randomized study investigating whether vaccination against herpes zoster (shingles) can reduce the risk of cardiovascular disease and dementia in older adults. Herpes zoster is caused by reactivation of the varicella-zoster virus and becomes more common with increasing age. Some observational studies have suggested that vaccination against herpes zoster may also lower the risk of heart attacks, strokes, and dementia, but this has not been confirmed in randomized clinical trials. In this study, approximately 162,000 adults aged 65 years or older living in Denmark will be randomly assigned to either receive the recombinant herpes zoster vaccine (Shingrix®) or receive no vaccine. Participants in the vaccine group will receive two doses given 2-6 months apart. Participants will be identified and invited using Danish national registries and digital mail systems. Information about health outcomes will be collected through nationwide health registries during follow-up. The main outcomes of the study are major cardiovascular events (heart attack, stroke, or cardiovascular death) and new diagnoses of dementia. The goal of the study is to determine whether herpes zoster vaccination can help prevent these conditions in older adults.

This description comes directly from the study's public registry record.

Talk to the study team

Daniel Modin, MD  ·  +4541828993  ·  danielmodin.md@gmail.com

Tor Biering-Sørensen, MD, PhD, MSc, MPH  ·  +4528933590  ·  tor.biering-soerensen@regionh.dk

Always discuss trial participation with your own doctor first.

Locations (2)

Center for Translational Cardiology and Pragmatic Randomized Trials, Department of Cardiology, Copenhagen University Hospital - Herlev and GentofteHellerup, DenmarkNot Yet Recruiting
Danske Lægers Vaccinations ServiceSøborg, DenmarkRecruiting

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Source record: clinicaltrials.gov/study/NCT07485283