LISANDRA PARAGUASSU BRAZIL’S federal government wants to halt COVID-19 vaccinations for most adolescents, citing a death under investigation and adverse events after some 3.5 million teens have already been immunized, but several state governments vowed to press on. At a news conference, Health Minister Marcelo Queiroga criticized states and cities for jumping the gun by vaccinating 12- to 17-year-olds without health issues that put them at risk of severe COVID-19, which he said was only supposed to start on Wednesday. Queiroga said healthy adolescents who have already taken one shot should not take a second - effectively seeking to halt…