Study on a Live-attenuated Respiratory Syncytial Virus Vaccine for Assessment of Safety, Transmissibility, and Genetic Stability of the Vaccine Virus Among Close Contacts in Infants and Toddlers 6 to < 24 Months of Age in Puerto Rico (USA)
Public ClinicalTrials.gov record NCT05687279. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Phase II, Randomized, Observer-blind, Placebo-controlled, Multi-center Study of a Live Attenuated Respiratory Syncytial Virus Vaccine to Assess the Vaccine Virus' Transmissibility in Household or Daycare Center Settings, Shedding, and Genetic Stability, and to Describe the Immunogenicity and Safety of the Vaccine in Infants and Toddlers 6 to < 24 Months of Age in Puerto Rico (USA)
Study identification
- NCT ID
- NCT05687279
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 1, Phase 2
- Lead sponsor
- Sanofi Pasteur, a Sanofi Company
- Industry
- Enrollment
- 80 participants
Conditions and interventions
Conditions
Interventions
- RSVt Vaccine Biological
- Control Group Other
Biological · Other
Eligibility (public fields only)
- Age range
- 6 Months to 23 Months
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Feb 5, 2023
- Primary completion
- Dec 26, 2024
- Completion
- Dec 26, 2024
- Last update posted
- Jan 25, 2026
2023 – 2024
United States locations
- U.S. sites
- 2
- U.S. states
- 1
- U.S. cities
- 2
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Meridian Clinical Research Norfolk Site Number : 8400003 | Norfolk | Nebraska | 68701 | — |
| Velocity Clinical Research, Omaha Site Number : 8400001 | Omaha | Nebraska | 68134 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
Non-U.S. locations
This page focuses on the U.S. directory. The official record also lists 4 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT05687279, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jan 25, 2026 · Synced Jul 21, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT05687279 live on ClinicalTrials.gov.