Respiratory syncytial virus (RSV)

Respiratory syncytial virus (RSV) is a common cause of coughs and colds. It usually gets better by itself, but it can be serious for some babies and older adults.

Who's at risk from RSV

RSV is very common. Almost all children get it at least once before they're 2 years old.

It's not usually serious, but some babies and adults have a higher risk of getting seriously ill, particularly:

  • babies under 6 months old
  • children who were born prematurely
  • adults over 75 years
  • babies, children and older adults with a weakened immune system, or long-term lung or heart conditions

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.

Further information

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Published: Aug 23, 2024