Happened: A letter to the editor published in the New England Journal of Medicine titled "Open Schools, Covid-19, and Child and Teacher Morbidity in Sweden" has found that "Despite Sweden's having kept schools and preschools open, we found a low incidence of severe Covid-19 among schoolchildren and children of preschool age during the SARS-CoV-2 pandemic…No child with Covid-19 died…Among the 1,951,905 million children who were 1 to 16 years of age, 15 children had Covid-19, MIS-C, or both conditions and were admitted to an ICU, which is equal to 1 child in 130,000."

It was published by  Jonas F Ludvigsson a paediatrician at Örebro University Hospital and professor of clinical epidemiology at the Karolinska Institute.

The study also showed that  "fewer than 10 preschool teachers and 20 schoolteachers in Sweden received intensive care for Covid-19 up until June 30, 2020 (20 per 103,596 school teachers, which is equal to 19 per 100,000). As compared with other occupations (excluding health care workers), this corresponded to sex- and age-adjusted relative risks of 1.10 (95% confidence interval [CI], 0.49 to 2.49) among preschool teachers and 0.43 (95% CI, 0.28 to 0.68) among schoolteachers.