A “strikingly low” 1% of these 651 children and young people – six in total – had died in hospital with Covid-19 compared with 27% across all other age groups, the study found.

Eighteen per cent of the children needed intensive care.

And the six who had died had had “profound” underlying health conditions that had often been complex and themselves life-limiting.

Children with such conditions remained vulnerable to the virus and must take precautions, the researchers said.

But for others, the risk was extremely low.