A new antibody treatment could reduce by 80 per cent the numbers of babies and young children admitted to hospital with respiratory syncytial virus (RSV), a “groundbreaking” study has found.

Published in the New England Journal of Medicine on Thursday, the study involved 8,058 healthy babies aged up to 12 months from the UK, France and Germany, who were approaching their first RSV season. Half were randomly assigned to receive the antibody nirsevimab by injection, while 4,021 babies received standard care.

Of the babies who received the treatment, only 11 (0.3 per cent) were hospitalised, in comparison with the 60 babies (1.5 per cent) who were hospitalised after receiving just the standard care.