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HD vs SD Quadrivalent Influenza Vaccine in Adults Aged 65 to 79 Years in Galicia

NCT06141655 · Status: COMPLETED · Phase: PHASE4 · Type: INTERVENTIONAL · Enrollment: 134476

Last updated 2025-08-08

No results posted yet for this study

Summary

This pragmatic randomized trial is designed to evaluate the relative vaccine effectiveness of QIV-HD vs. QIV-SD in reducing the risk of hospitalization for influenza or pneumonia in adults 65-79 years of age in Galicia during 2023/2024 and 2024/2025 seasons.

Conditions

Interventions

DRUG

Influenza vaccine

Participants will be individually randomized 1:1 to receive either QIV-HD or QIV-SD, one dose, the day of the inclusion in the trial

Sponsors & Collaborators

  • Federico Martinón Torres

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
65 Years
Max Age
79 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2023-10-26
Primary Completion
2025-05-31
Completion
2025-05-31

Countries

  • Spain

Study Locations

More Related Trials

Entities

Drugs
Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06141655 on ClinicalTrials.gov