16/02/2026
Respiratory syncytial virus (RSV) is a common cause of coughs and colds. RSV infectinos usually get better by themselves, but can sometimes be serious for babies and older adults.
RSV infections are very common. Almost all children get them at least once before they’re 2 years old.
They're not usually serious, but some babies and adults have a higher risk of getting seriously ill, particularly:
babies under 6 months old
young children who were born prematurely
adults over 75 years
babies, children and adults with a weakened immune system, or long-term lung or heart conditions
people who smoke to***co and babies exposed to to***co smoke
In babies, RSV is a common cause of a type of chest infection called bronchiolitis.
This can cause breathing problems and may need to be treated in hospital.
RSV can also cause a serious lung infection (pneumonia) in babies and older adults.
Swipe for symptoms and when to get advice from medical professionals.
[Source: NHS]