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Updated: Aug 13, 2026

An In vitro Model to Study Immune Responses of Human Peripheral Blood Mononuclear Cells to Human Respiratory Syncytial Virus Infection
Published on: December 10, 2013
Respiratory syncytial virus prophylaxis--the story so far
1Department of Paediatrics, The University of Colorado School of Medicine and The Children's Hospital, Denver 80218, USA.
Insights
Palivizumab, a monoclonal antibody, offers effective prophylaxis against respiratory syncytial virus (RSV) hospitalizations in high-risk children. This passive immunoprophylaxis option has demonstrated safety and efficacy in clinical trials worldwide.
Area of Science:
- Pediatrics
- Virology
- Immunology
Background:
- Respiratory syncytial virus (RSV) is a highly contagious pathogen causing significant morbidity and mortality in high-risk children.
- Current RSV therapies are sub-optimal, focusing on symptom management rather than direct treatment.
- Developing an effective RSV vaccine has faced considerable challenges since the virus's discovery.
Purpose of the Study:
- To evaluate the efficacy and safety of palivizumab as a passive immunoprophylaxis for respiratory syncytial virus (RSV).
- To assess the impact of palivizumab on RSV-related hospitalizations in high-risk pediatric populations.
Main Methods:
- Review of clinical trial and outcomes data for palivizumab.
- Analysis of safety and efficacy observations from post-approval studies.
Main Results:
- Palivizumab significantly reduced RSV-related hospitalizations in North America and Europe.
- The monoclonal antibody demonstrated a favorable safety profile with few adverse effects.
- Ongoing data collection continues to support initial findings on palivizumab's safety and efficacy.
Conclusions:
- Passive immunoprophylaxis with palivizumab is a viable and effective alternative to active immunization for RSV prevention.
- Palivizumab provides a crucial tool for reducing the burden of RSV in high-risk children.
- Continued monitoring and data analysis reinforce the established safety and efficacy of palivizumab.
Abstract:
Respiratory syncytial virus (RSV) is a common and highly contagious pathogen that infects nearly all children by the age of 2 years. It is responsible for significant morbidity and mortality worldwide among certain high-risk paediatric populations. Therapy is sub-optimal for RSV, thus treatment focuses on ameliorating symptoms. Since discovery of the virus in the 1950s, efforts have been ongoing to develop a safe and effective vaccine. These efforts have met with serious obstacles. Passive immunoprophylaxis presents a viable alternative to active immunization. In 1998, the genetically engineered humanized monoclonal antibody (palivizumab) was granted FDA (Food and Drug Administration) approval for prophylaxis of high-risk children in the United States; EMEA (European Agency for the Evaluation of Medicinal Products) approval followed in 1999 for Europe. It is now approved in over 45 countries worldwide. Palivizumab was shown to significantly reduce RSV-related hospitalizations in North America and Europe with few adverse effects. Clinical trial and outcomes data documenting experience with palivizumab to date continue to extend the initial safety and efficacy observations.
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