Plain-English translation of NCT06998264 on ClinicalTrials.gov ↗ · Source last updated · Translation generated · How we translate trials
Researchers want to understand how children's bodies fight the flu by studying the immune response in the nose and blood. This observational study will compare children who have the flu with children who don't have it or who received a nasal flu vaccine, to learn more about what happens during infection and recovery.
Most research on how the immune system fights flu has focused on the blood, but the nose is actually where the flu virus first enters the body. By studying the immune response in the nose directly, doctors hope to develop better treatments and vaccines for children.
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Your child will have two main study visits — one within 72 hours of hospital admission and another about one month later. At each visit, researchers will collect blood, nasal samples, and saliva, and ask about symptoms. Between visits, you'll provide additional nasal and saliva samples every 2–3 days until your child feels better.
AI-generated summary from trial data · Aug 26, 2026 · Not medical advice
Switzerland
Enrollment target
~40 participants
Started
March 2025
Primary completion
November 2026
This trial's estimated completion date has passed — the record may not be fully up to date.
Age range
2 Years – 5 Years
Last updated on clinicaltrials.gov in May 2025.
Reach out to the team running this trial. Response times vary — some teams are faster than others.
Central contact
Jennifer Villers, PhD
University of Geneva, Switzerland
Tell us you're interested and we'll help connect you with the research team. We'll walk you through what to expect first — no email needed to get started.