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Updated: Aug 17, 2025

Generation, Amplification, and Titration of Recombinant Respiratory Syncytial Viruses
Published on: April 4, 2019
[Epidemiology and the burden of RSV]
Catherine Weil-Olivier1, Mathie Lorrot2
1Professeur honoraire de pédiatrie, Université de Paris.
Insights
Respiratory Syncytial Virus (RSV) causes frequent respiratory infections in young children, with reinfections common due to incomplete immunity. Early diagnosis and prevention are crucial for managing this significant public health concern.
Area of Science:
- Pediatrics
- Infectious Diseases
- Public Health
Context:
- Respiratory Syncytial Virus (RSV) is a common cause of respiratory infections in children under five.
- Young children, especially those under one, are most vulnerable to severe RSV illness.
- Risk factors like prematurity and passive smoking exacerbate RSV severity.
Purpose:
- To highlight the widespread impact and recurrent nature of RSV infections in children.
- To underscore the limitations of current immunity and prevention strategies.
- To emphasize the need for improved recognition and management of RSV pathology.
Summary:
- RSV frequently causes upper and lower respiratory tract infections in children under five, with reinfections occurring due to incomplete immunity.
- Infants under one are most affected, and pre-existing risk factors increase disease severity.
- Current prevention methods are underutilized, and the socio-economic burden of RSV is substantial.
Impact:
- Highlights the significant public health and economic costs associated with RSV care.
- Stresses the importance of considering long-term consequences like asthma and wheezing.
- Advocates for improved diagnostic accessibility and parental education for better RSV management.
Abstract:
RSV is an almost obligatory virus responsible for upper (rhinitis and otitis) and lower (bronchiolitis and asthma attack) respiratory infections in children under 5 years of age. Reinfections are frequent at all ages because immunity is only partial and does not last long. Young children under the age of 1 are the most affected. The majority of these children are healthy. Having a risk factor (premature birth, heart disease, bronchopulmonary dysplasia, but also passive smoking) increases the severity of RSV pathology. Very few children currently benefit from prevention by anti-RSV monoclonal antibodies. The annual cost of care, the various socio-economic costs are a public health reality in three care sectors: out-patient, pediatric emergencies, hospitalization. Subsequent consequences: repeated wheezing and asthma, should also be taken into consideration and integrated into public health decisions. Progress in recognizing this pathology is desirable: distribution of diagnostic tests in the city; providing parents with information.
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