Corona is harmless for children, it was said from the start – but it was ignored that in rare cases serious complications can occur. A few weeks later, regarding one in 10,000 children with Covid-19 develops a severe inflammatory reaction that affects many organs and can be life-threatening. Now it seems that a cause for this dangerous complication has been found. According to the latest research results, this MIS-C or PIMS syndrome is likely to be triggered by gene mutations in the innate immune system. This is now reported by US scientists in the science journal “Science”.