Together against RSV
Welcome to the RSV Hub. Here you can learn more about respiratory syncytial virus (RSV), the illnesses it causes and associated symptoms.
This hub is intended for the UK general public and has been created and funded by Sanofi.
Respiratory Syncytial Virus (RSV), pronounced “sin-si-tial”, is a common and contagious virus that affects nearly all children by the time they are two years old.1
The other most commonly detected viruses that can also cause respiratory illness in babies include rhinovirus and influenza virus.2
Findings from a 2022 survey organised and funded by Sanofi showed that approximately half of parents hadn't heard of RSV, or only know it by name.3
Infant RSV is responsible for...
£14 million in lost productivity of parents and carers4
£1.5 million out-of-pocket costs incurred by parents and carers4
Between 2024/2025, RSV-related hospitalisation costs for infants 0-5 were £87.2 million. The majority of costs, £80.4 million, were for babies (0-1 year)5
There are around 467,000 visits to GPs (primary care physicians)4
There were 54,460 RSV-related admissions of infants under the age of 1.5 13% required intensive care.6
The total economic cost of treating RSV in those under 5 years is estimated to be £102.7 million each year4,5
Watch this video to learn more about the signs and symptoms of RSV-related illnesses and steps you can take to help protect your baby
RSV infections
Most RSV infections in babies are mild and clear up on their own within a few weeks, however, some cases can be more serious.7
In the UK, there are approximately 30,000 infants hospitalised each year due to RSV.5 Last year in England, there were 54,460 RSV-related hospital admissions for babies under 1 year.5 Bronchiolitis and pneumonia are examples of severe illnesses that can be caused by RSV.8
Who is at risk?
All infants are at risk of RSV.1 While most infections cause mild, cold-like symptoms, it's important to be aware of RSV and understand how to spot the more severe symptoms.9
With the right information, parents, parents-to-be and caregivers can feel better prepared, reducing worry or stress at a time when life can be stressful enough.
How to prevent RSV
There are precautions you can take to help protect your baby from RSV. These are the same steps you might take to prevent other common viral infections like:10
- Washing or wiping down toys and cleaning surfaces regularly
- Not touching your eyes, nose or mouth if your hands are not clean
- Using disposable tissues and throwing them away as soon as you've used them
- Trying to keep newborn babies away from anyone with a cold or the flu, especially if they were born prematurely or have serious health conditions
The nationwide Together Against RSV survey (2022) of 1,500 parents unveiled the burden RSV can have, including on parents' mental health, day-to-day life, family life and even work and finances. It also showed that parents lack adequate RSV understanding and information.
“I would have loved to have known what to look out for, and that my baby sucking his stomach in whilst breathing was an indicator of RSV related illness”
Carrie-Anne, parent of a child with RSV
“The RSV burden on parents could be greatly alleviated through a better understanding of what RSV is, what the symptoms to look out for are and when and where to seek help,”
Professor Harish Nair, Chair of Paediatric Infectious Diseases and Global Health at the University of Edinburgh.
References
- World Health Organization. Respiratory syncytial virus (RSV). Available at: https://www.who.int/health-topics/respiratory-syncytial-virus#tab=tab_1. Last Accessed: May 2026.
- NHS Guy’s and St Thomas’ NHS Foundation Trust. Your child’s respiratory virus infection and how we manage it. Available at: https://www.evelinalondon.nhs.uk/resources/patient-information/respiratory-virus-infection-control.pdf. Last Accessed: May 2026.
- Toluna 2022 Survey. Data on file.
- RAND Report. The impact of respiratory syncytial virus on the NHS, society and economy in the UK. Available at: https://www.rand.org/randeurope/research/projects/impact-of-respiratory-syncitial-virus.html. Last Accessed: May 2026.
- Sanofi Data on File
- House of Lords Library. Protecting infants from respiratory syncytial virus (RSV). Available at: https://lordslibrary.parliament.uk/protecting-infants-from-respiratory-syncytial-virus/". Last Accessed: May 2026.
- BabyCentre. Respiratory syncytial virus (RSV). Available at: https://www.babycentre.co.uk/a25022968/respiratory-syncytial-virus-rsv. Last Accessed: May 2026.
- UK Government. Respiratory syncytial virus (RSV): symptoms, transmission, prevention and treatment. Available at: https://www.gov.uk/government/publications/respiratory-syncytial-virus-rsv-symptoms-transmission-prevention-treatment. Last Accessed: May 2026.
- Asthma + Lung UK. How to spot respiratory tract infections in children. Available at: https://www.asthmaandlung.org.uk/conditions/signs-breathing-problems-children/how-spot-respiratory-tract-infections-children. Last Accessed: May 2026
- NHS. Respiratory syncytial virus (RSV). Available at: https://www.nhs.uk/conditions/respiratory-syncytial-virus-rsv/". Last Accessed: May 2026.
