Jonas Ludvigsson is a professor at the Department of Medical Epidemiology and Biostatistics at Karolinska Institutet and chief physician at the Department of Pediatrics at Örebro University Hospital.
As a researcher, he has studied exactly how children are affected by covid-19.
We asked him three questions about children and the coronavirus.
How do children become infected, why do they not get so sick and how important is it to test them?
Hear his reasoning in the clip.