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Intrahospital Influenza Vaccination in Patients at High Cardiovascular Risk (VACC-UP) (VACC-UP)

18 juli 2026 bijgewerkt door: Stephan Baldus

Intrahospital Vaccination and Active Counseling Versus Active Counseling Alone to Increase Seasonal Influenza immUnization in Patients at High Cardiovascular Risk in Germany: The Randomized Controlled VACC-UP Study

The aim of this study is to evaluate the effect of offering intrahospital influenza vaccination as an adjunct to active counseling during the index hospitalization to adult patients hospitalized for acute coronary syndrome (ACS) or congestive heart failure (CHF), compared with active counseling alone, on influenza vaccination rates in patients at high cardiovascular risk.

Patients are randomized 1:1 to either an offer of bedside intrahospital influenza vaccination according to the recommendations of the German Standing Vaccination Committee (STIKO) in addition to standardized active counseling (intervention group), or standardized active counseling plus the standard-of-care recommendation for ambulatory vaccination in the discharge papers (control group). The primary endpoint is the influenza vaccination rate at the end of the index season (March 31).

Studie Overzicht

Toestand

Nog niet aan het werven

Conditie

Interventie / Behandeling

Studietype

Ingrijpend

Inschrijving (Geschat)

482

Fase

  • Niet toepasbaar

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studiecontact

Studie Contact Back-up

Studie Locaties

  • Duitsland
      • Cologne, Duitsland, 50937
        • Clinic III for Internal Medicine, University Hospital of Cologne
        • Contact:
        • Hoofdonderzoeker:
          • Stephan Baldus, Prof. Dr. med.
      • Hamburg, Duitsland, 20246
        • Department of Cardiology, University Heart and Vascular Centre Hamburg
        • Hoofdonderzoeker:
          • Natalie Arnold, Dr. med.

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

  • Volwassen
  • Oudere volwassene

Accepteert gezonde vrijwilligers

Nee

Beschrijving

Inclusion Criteria:

  • Age 18 years or older
  • Hospitalized due to acute coronary syndrome (ACS) or congestive heart failure (CHF) and fulfilling the criteria for influenza vaccination according to the recommendations of the German Standing Vaccination Committee (STIKO)
  • Written informed consent

Exclusion Criteria:

  • Already received seasonal influenza vaccination in the current season, based on self-reported vaccination status and/or vaccination certificate
  • Laboratory-confirmed active influenza infection during the index hospitalization
  • Contraindication for vaccination (e.g., known allergy)
  • Inability to provide written informed consent

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Onderzoek naar gezondheidsdiensten
  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Parallelle opdracht
  • Masker: Geen (open label)

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Experimenteel: Intrahospital vaccination offer
Patients receive standardized active influenza vaccination counseling and are additionally offered bedside intrahospital vaccination against seasonal influenza according to the latest STIKO recommendations at any time prior to discharge during the index hospitalization.
Biologisch: Intrahospital seasonal influenza vaccination offer
Offer of bedside vaccination against seasonal influenza during the index hospitalization, administered in a standardized manner by trained treating physicians according to the latest STIKO recommendations and the respective product information. The appropriate vaccine is selected according to current recommendations (e.g., high-dose quadrivalent vaccine for patients aged 60 years and older, standard-dose quadrivalent vaccine otherwise). Vaccination is offered from September 1 to February 28 of the respective influenza season.
Andere namen:
  • Seasonal influenza vaccine (high-dose or standard-dose according to STIKO recommendations)
Gedragsmatig: Standardized active influenza vaccination counseling
Standardized active counseling on influenza vaccination using a cardiovascular gain-framed information sheet, including the recommendation to be vaccinated and the opportunity to discuss vaccination with the treating physician. Counseling is provided to all patients in both arms after completion of the baseline 7C questionnaire and prior to randomization.
Actieve vergelijker: Active counseling alone (standard of care)
Patients receive standardized active influenza vaccination counseling and the current standard of care in Germany, i.e., the recommendation to obtain ambulatory influenza vaccination as stated in the discharge papers. No intrahospital influenza vaccination is administered during the index hospitalization.
Gedragsmatig: Standardized active influenza vaccination counseling
Standardized active counseling on influenza vaccination using a cardiovascular gain-framed information sheet, including the recommendation to be vaccinated and the opportunity to discuss vaccination with the treating physician. Counseling is provided to all patients in both arms after completion of the baseline 7C questionnaire and prior to randomization.
Gedragsmatig: Standard of care discharge recommendation for ambulatory vaccination
Current standard of care in Germany: the recommendation to obtain ambulatory influenza vaccination from the primary care physician, stated in the discharge papers.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Influenza vaccination rate at the end of the index influenza season
Tijdsspanne: From randomization to the end of the index influenza season (March 31), up to approximately 7 months
Proportion of patients vaccinated against seasonal influenza at the end of the index season (defined as March 31). For intervention group patients vaccinated during the index hospitalization, vaccination status is documented from inpatient medical records. For control group patients and intervention group patients who declined intrahospital vaccination, self-reported vaccination status is assessed by telephone interview beginning April 1 and cross-validated with data from the treating general practitioner.
From randomization to the end of the index influenza season (March 31), up to approximately 7 months

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Influenza vaccination rate at the end of the post-index influenza season
Tijdsspanne: From randomization to the end of the post-index influenza season (March 31 of the following year), up to approximately 19 months
Proportion of patients vaccinated against seasonal influenza at the end of the post-index season. For all patients, self-reported vaccination status is assessed by telephone interview beginning April 1 of the post-index season and cross-validated with data from the treating general practitioner.
From randomization to the end of the post-index influenza season (March 31 of the following year), up to approximately 19 months
Association of the individual components of the 7C psychological antecedents of vaccination questionnaire with vaccination status
Tijdsspanne: Baseline (prior to counseling and randomization) and end of the index influenza season (March 31), up to approximately 7 months
Association of the individual components of the 7C psychological antecedents of vaccination questionnaire (7-point scale, long version), assessed at baseline prior to active counseling, with vaccination status at the end of the index season. Assessed using univariate and multivariable regression models reporting odds ratios with 95% confidence intervals.
Baseline (prior to counseling and randomization) and end of the index influenza season (March 31), up to approximately 7 months
Patient satisfaction with the offer of intrahospital influenza vaccination
Tijdsspanne: During the index hospitalization, up to approximately 14 days
Descriptive assessment of patient satisfaction with the intrahospital vaccination offer, based on a study-specific patient satisfaction questionnaire completed by patients in the intervention group.
During the index hospitalization, up to approximately 14 days

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Stephan Baldus

Medewerkers

Sanofi

Onderzoekers

  • Hoofdonderzoeker: Stephan Baldus, Prof. Dr. med., Clinic III for Internal Medicine, University Hospital of Cologne
  • Studie directeur: Sebastian Heyne, Dr. med., Clinic III for Internal Medicine, University Hospital of Cologne

Publicaties en nuttige links

De persoon die verantwoordelijk is voor het invoeren van informatie over het onderzoek stelt deze publicaties vrijwillig ter beschikking. Dit kan gaan over alles wat met het onderzoek te maken heeft.

Algemene publicaties

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Geschat)

1 september 2026

Primaire voltooiing (Geschat)

1 maart 2028

Studie voltooiing (Geschat)

1 juni 2029

Studieregistratiedata

Eerst ingediend

18 juli 2026

Eerst ingediend dat voldeed aan de QC-criteria

18 juli 2026

Eerst geplaatst (Werkelijk)

23 juli 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

23 juli 2026

Laatste update ingediend die voldeed aan QC-criteria

18 juli 2026

Laatst geverifieerd

1 juli 2026

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • 26-1232

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

NEE

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

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