Sweden's Covid-19 strategy for schools is complex, but nonchalant attitudes and a lack of systematic protection for schoolchildren can only be described as irresponsible, argues Lisa Bjurwald in this opinion piece.In the US, liberal news media are reporting with horror that several Republican-led states will penalise schools that require masks. This despite the number of infected children soaring, not least in Republican states such as Florida and Texas, and despite leading public health experts including the American Academy of Pediatrics and the Centers for Disease Control and Prevention recommending universal indoor masking in schools this year. In Swedish schools, you’d...