While medical advances are boosting the survival rate of cancer in childhood, the survivors could be at a higher risk of developing severe Covid-19 as adults, according to a new study published in the journal The Lancet Regional Health-Europe on Friday. 

The study from Karolinska Institutet in Sweden showed that health risks may remain long after treatment has ended.

The results show that childhood cancer survivors had a lower risk of contracting Covid but were 58 per cent more likely to develop severe disease if they did become infected.