Thousands of premature babies in the UK can now be protected against a common winter virus which can cause a dangerous lung infection, and sometimes kill.

The injection will provide them “with a protective bubble” against RSV (respiratory syncytial virus) in time for the colder months, NHS medics said.

Most babies are protected via vaccination late in pregnancy, but babies born before 32 weeks are more vulnerable to life-threatening infections from the virus.

From late September, 9,000 babies and young children at risk across the UK will be offered a dose of the drug nirsevimab through the NHS.

RSV usually causes coughs and colds, but can make some children very ill with breathing problems, pneumonia and a lung infection called bronchiolitis.

According to NHS England, premature babies are three times more likely to go to hospital with RSV and are 10 times more likely to need intensive care compared with full-term babies.

Every year around 30,000 children in the UK aged under five need hospital care because of the virus, and around 30 don’t survive.

The drug offers six months’ protection in a single dose, and is more than 80% effective.

Neo-natal clinics will deliver the injection to premature babies. Families of vulnerable infants with heart or lung conditions or weakened immune systems will be advised by their medical teams how to get the jab before this winter.

“It will offer a long-lasting defence, helping to avoid unnecessary hospitalisations and serious illness, giving babies the best possible start in life and shielding them from harm,” said Dr Claire Fuller, co-national medical director for NHS England.