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Updated: Sep 20, 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 infection in young Malaysian children
Insights
Respiratory syncytial virus (RSV) causes significant respiratory illness in infants. While most young Malaysian children experience mild RSV illness, severe cases require intensive care and ventilation, with younger age and underlying conditions being risk factors.
Area of Science:
- Pediatrics
- Infectious Diseases
- Respiratory Medicine
Background:
- Respiratory syncytial virus (RSV) is a primary cause of respiratory illness in young children.
- Understanding RSV clinical profiles and risk factors is crucial for effective management.
Purpose of the Study:
- To investigate the clinical characteristics of RSV infection in Malaysian children.
- To identify risk factors associated with respiratory distress in young children hospitalized with RSV.
Main Methods:
- Retrospective review of 185 hospitalized children under 24 months with RSV infection.
- Classification of respiratory distress severity using a modified Respiratory Distress Assessment Instrument (RDAI) score.
Main Results:
- RSV infection peaked in infants aged 3-6 months, with a male predominance.
- 25% of patients had underlying illnesses; 63% presented with mild respiratory distress.
- Severe respiratory distress (8% of cases) necessitated intensive care and ventilation in 80% of those patients. Risk factors included age <3 months, family history of asthma, and underlying disease.
Conclusions:
- Most Malaysian children with RSV infection present with mild symptoms.
- A subset of children develop severe illness, leading to respiratory failure and requiring assisted ventilation.
Unlabelled:
Respiratory syncytial virus (RSV) is the most important agent causing respiratory illness in the young paediatric age group.
Objective:
To determine the clinical profile and risk factors for respiratory distress in young Malaysian children with RSV infection.
Method:
The study was a retrospective review of 185 children below the age of 24 months hospitalised with RSV infection. Respiratory distress at admission was categorised into mild, moderate and severe using a modified respiratory distress assessment instrument (RDAI) score.
Results:
RSV infection occurred most frequently in the 3-6 months age group with a male predominance. A small number of patients had extrapulmonary symptoms of diarrhoea (8%) and seizures (7%). Forty-seven patients (25%) had an underlying illness. The majority of patients (63%) had mild respiratory distress. All patients (8%) with severe respiratory distress required intensive care and 80% of them required assisted ventilation. The overall mean duration of hospital stay was 7.0 +/- 5.0 days. There was only one death. Risk factors associated with respiratory distress included age less than 3 months, a family history of bronchial asthma and presence of an underlying disease.
Conclusion:
The majority of Malaysian children with RSV infection had a mild illness but a small number of them who developed severe illness had a higher incidence of respiratory failure requiring assisted ventilation.
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Pulmonary Cycle: Exhalation
Coronavirus
Respiratory Syncytial Virus Disease

