While government data from Brazil suggest that over 800 children under age 9 have died of Covid-19, an expert estimates that the death toll is nearly three times higher. Dr. Fatima Marinho of the University of São Paolo, a leading epidemiologist who is a senior adviser to the international non-governmental organization Vital Strategies, estimated that the virus has killed 2,060 children under 9, including 1,302 babies. Her estimate is based on the number of excess deaths from an unspecified acute respiratory syndrome during the pandemic. There is a misconception that children are at zero risk for Covid-19, Marinho told the...