Sanofi Showcases Groundbreaking Beyfortus Data at IDWeek 2024, Highlighting Over 80% Effectiveness in Protecting Infants Against RSV

Sanofi advances its ambition to protect all infants from respiratory syncytial virus (RSV) disease with new Beyfortus (nirsevimab) data to be presented at the Infectious Disease Society of America’s IDWeek 2024 annual meeting in Los Angeles, California, from October 16-19, 2024.

Thomas Triomphe
Executive Vice President, Vaccines, Sanofi
“The data featured at IDWeek from several national immunization programs will reinforce the proven efficacy and favorable safety profile of Beyfortus against RSV disease and hospitalization in infants. In just the first year of implementation, Beyfortus has demonstrated high real-world effectiveness consistently exceeding 80%. In addition, Beyfortus delivers this protection in the right dose for the right baby. We’re proud to set a new standard with Beyfortus as the only approved and proven RSV protection for infants regardless of whether they are born before or during the RSV season, at term or preterm, healthy or with underlying conditions.”

Beyfortus doses continue to be shipped to meet global commitments ahead of the 2024-2025 RSV season. A second manufacturing filling line has been approved by regulatory authorities in the US, Canada, and Europe and represents the majority of our supply for the 2024-2025 season. A third filling line, expected to provide additional doses for the 2024-2025 season, is approved by the European Medicines Agency and under review by the US Food and Drug Administration.

Beyfortus and RSV data at IDWeek 2024

• Thursday, October 17, 12:15-1:30 pm PT: RSV Prophylaxis with Nirsevimab in Infants: Systematic Review of Early Real-World Evidence on Effectiveness and Impact​ (Sanofi, presented by Oliver Martyn, MPH, Poster# P-631)
• Thursday, October 17, 12:15-1:30 pm PT: Implementation and Uptake of Nirsevimab within Nemours Children’s Health Delaware Healthcare System (independent study by Nemours Children’s Health Delaware, presented by Sara Mann, Poster# P-633)
• Thursday, October 17, 1:15-2:00 pm PT Preventing RSV Lower Respiratory Tract Disease in Infants: The First Year in Review (Sanofi, Learning Lounge event)
• Thursday, October 17, 1:45-3:00 pm PT: Universal Immunization Strategy Against Respiratory Syncytial Virus (RSV) Prevention in Chile with Nirsevimab during the 2024 Winter Season: First Southern Hemisphere Nationwide Effectiveness Data (independent study by University of Chile, presented by Juan Pablo Torres-Torretti, MD, PhD, during the Late Breaker Abstract Session: Respiratory Viruses Across All Ages, #169).
• Friday, October 18, 12:15-1:30 pm PT: Significant Reduction in Disease Burden and a Shift in Clinical Diagnoses in Children Hospitalized with Respiratory Syncytial Virus (RSV) after Nirsevimab Implementation in Catalonia (Spain) (independent study presented by Anna Creus-Costa, MD, Poster# P-1186)
• Friday, October 18, 12:15-1:30 pm PT: The burden of respiratory syncytial virus among Brazilian infants (BONSAI study): preliminary results (Sanofi, presented by Manoel Ribeiro, MD, PhD, Poster# P-1199)
• Saturday, October 19, 12:15-1:30 pm PT: Nirsevimab in Patient Samples Does Not Interfere with Respiratory Syncytial Virus (RSV) Detection by Commercially Available Rapid Antigen Tests (AstraZeneca, presented by Sarah R. Sincero, BSc, Poster# P-2179).