Related Experiment Video
Updated: Nov 17, 2025
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
Severe respiratory syncytial virus disease in preterm infants: a case of innate immaturity
Jeremy Anderson1, Lien Anh Ha Do1,2, Danielle Wurzel1,2,3
1Infection and Immunity, Murdoch Children's Research Institute, Melbourne, Victoria, Australia.
Insights
Preterm infants face higher risks of severe respiratory syncytial virus (RSV) infection due to immature innate immunity. Understanding these immune differences is key to developing new treatments for vulnerable infants.
Area of Science:
- Immunology
- Pediatrics
- Virology
Background:
- Respiratory syncytial virus (RSV) is a leading cause of acute lower respiratory tract infections (LRTI) in young children.
- Severe RSV disease can lead to chronic respiratory issues like asthma and recurrent wheezing.
- Premature gestation is a significant risk factor for severe RSV, linked to an underdeveloped innate immune system.
Purpose of the Study:
- To compare innate immune responses between preterm and term infants.
- To elucidate the reasons for increased susceptibility to severe RSV in preterm infants.
- To identify early life immune biomarkers for severe RSV disease risk.
Main Methods:
- Comparative analysis of innate immunity aspects in preterm versus term infants.
- Review of existing literature on RSV pathogenesis and infant immune development.
- Exploration of potential immune biomarkers for disease severity.
Main Results:
- Preterm infants possess an immature innate immune system, compromising pathogen defense.
- This immune immaturity increases vulnerability to severe RSV infection.
- Key differences in innate immunity between preterm and term infants contribute to disease severity.
Conclusions:
- Understanding innate immunity disparities is crucial for addressing severe RSV in preterm infants.
- Identifying specific immune biomarkers can guide targeted interventions.
- Reducing the burden of RSV disease in this high-risk population is a critical goal.
Abstract:
Respiratory syncytial virus (RSV) is the most common viral pathogen associated with acute lower respiratory tract infection (LRTI) in children under 5 years of age. Severe RSV disease is associated with the development of chronic respiratory complications such as recurrent wheezing and asthma. A common risk factor for developing severe RSV disease is premature gestation and this is largely due to an immature innate immune system. This increases susceptibility to RSV since the innate immune system is less able to protect against pathogens at a time when adaptive immunity has not fully developed. This review focuses on comparing different aspects of innate immunity between preterm and term infants to better understand why preterm infants are more susceptible to severe RSV disease. Identifying early life innate immune biomarkers associated with the development of severe RSV disease, and understanding how these compare between preterm and term infants, remains a critically important question that would aid the development of interventions to reduce the burden of disease in this vulnerable population.
Related Concept Videos
01:21Acute Respiratory Failure-II
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
01:21Acute Respiratory Failure-I
Definition: It is defined by specific criteria based on blood gas measurements. Hypoxemia happens when the partial pressure of oxygen (PaO2) falls below 60 mmHg. At the same time,...
01:30Acute Respiratory Failure-III
01:29Acute Respiratory Failure-V
Ensure that patients are monitored continuously for their response to therapy, including changes in...
01:29Pneumonia II: Pathophysiology
01:31Common Respiratory Disorders
Upper respiratory disorders impact the airways above the vocal cords, encompassing areas like the nose, sinuses, and throat. Various conditions fall under this category, including the common cold and allergic rhinitis. These disorders can stem from several causes,...