(Combined Sources) Gov. Charlie Baker says the recent surge in confirmed coronavirus cases in Massachusetts is being driven in large part by an increase among younger people. The governor said Tuesday that 15% of new cases in April were among people under the age of 30 but that 37% of the new confirmed cases are people in that age group. He urged people to stop holding indoor parties and reminded people that outdoor trick-or-treating on Halloween is safer. Baker also urged people to limit Thanksgiving gatherings to members of the same household and limit guests.