HD vs SD Quadrivalent Influenza Vaccine in Adults Aged 65 to 79 Years in Galicia
Status:
Recruiting
Trial end date:
2025-08-01
Target enrollment:
Participant gender:
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.