Not Yet RecruitingNot Applicable

National Observatory of Children Hospitalized With Bronchiolitis

France1,000 participantsStarted 2026-03-15

Plain-language summary

OVNI3 is multicenter, non-interventional study based on the analysis of retrospective patient data extracted from medical records and collected as part of routine clinical care following hospitalization for bronchiolitis

Who can participate

Age range

1 Day – 12 Months

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Children under 12 months * Treated at one of the 12 study sites * From October 15, 2025 to February 15, 2026 * For acute bronchiolitis defined according to current national and international recommendations * Hospitalized and * RSV testing * Known nirsevimab immunization status for the ongoing 2025/2026 season Exclusion Criteria: * Refusal to participate by the legal representative * Maternal immunization with abrysvo after September 1st 2025

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Evaluate the nirsevimab effectiveness for RSV Bronchiolitis hospitalized vs Non-RSV Bronchiolitis in 2025/2026.

Timeframe: 6 months

Trial details

NCT IDNCT07485907

SponsorAssociation Clinique Thérapeutique Infantile du val de Marne

Sponsor typeOTHER

Study typeOBSERVATIONAL

Primary completion2026-09-15

Contact for this trial

Corinne Levy

1 48 85 04 04 corinne.levy@activ-france.fr

View on ClinicalTrials.gov More Bronchiolitis trials

Who can participate

Age range

1 Day – 12 Months

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.