🏛️ Verified NIH Record • Updated 2026-08-04

Effectiveness of Immunization in Preventing Severe Acute Respiratory Infection RSV in Children Under 6 Months in Bogotá (NCT07279298)

Effectiveness of Immunization in Preventing Severe Acute Respiratory Infection Associated With Respiratory Syncytial Virus-RSV- in Infants Under 6 Months of Age in Bogotá: a Case-control Study With a Negative Test Design

🔵 Active, Not Recruiting Interventional Protocol 📊 Observational Clinical Research Sponsor: Bogotá District Health Secretariat

🩺 Plain-English Summary (8th-Grade Level)

This study aims to evaluate the real-world effectiveness of two preventive immunization strategies against Respiratory Syncytial Virus (RSV)-associated severe acute respiratory infection in infants less than six months of age in Bogotá, Colombia. The strategies include maternal vaccination with RSVpreF administered between 28 and 36 weeks of gestation and neonatal immunization with nirsevimab for infants born to mothers who did not receive RSVpreF during pregnancy. Using a test-negative case-control design embedded in the city's sentinel surveillance system, infants hospitalized for severe respiratory infection will be systematically tested for RSV. Comparative vaccine effectiveness will be estimated to determine the impact of maternal RSV vaccination and neonatal monoclonal antibody immunization on RSV-associated hospitalizations, intensive care admissions, and mortality. The study will generate real-world evidence to inform local and regional public health decisions and guide the implementation of cost-effective hybrid immunization strategies against RSV in middle-income settings.

Who can join: Review the eligibility criteria below.

Location: Secretaria distrital de Salud — Bogotá

Age range: 1 Day to 180 Days

📋 "Do I Qualify?" — 1-Minute Self Screener

Instant Checklist

Full eligibility criteria are available on the official NIH protocol. View the criteria ↗

📍 All Participating Trial Locations (1 Sites)

  • Secretaria distrital de Salud — Bogotá,

💰 Cost, Insurance & Patient Rights

  • 100% Free Items: The investigational treatment and protocol-required procedures are supplied at zero cost by the sponsor.
  • Routine Patient Care: Under federal law (ACA § 2709) and many state statutes, routine care costs are covered during participation.
  • Voluntary Participation: You may withdraw at any time without affecting your standard medical care.

💡 How to Participate

  1. Check the checklist above to see if you may qualify.
  2. Review the official NIH record below to find the coordinating site.
  3. Ask about the visit schedule, what is covered at no cost, and any travel support.
  4. Confirm with your own doctor before making a decision.
🏛️ View Official NIH Record ↗