coronavirus rise among young people.People aged under 39 make up more than half of the 203 cases reported in Ontario on July 21, leading the premier to point squarely at young people violating public health measures by partying and exceeding limit gatherings.“Guys, you got to rein it in,” Doug Ford told reporters. “Simple as that.” Health experts sound alarm as Canada’s coronavirus cases rise But according to experts, it’s not all that simple.