COVID-19 patients dying unexpectedly at home without having called for an ambulance is a troubling new trend that needs further investigation, Ontario’s chief coroner said on Friday.Why exactly patients who don’t appear to be seriously ill are suddenly taking a drastic turn for the worse has yet to be determined, Dirk Huyer said in an interview.“They didn’t have severe symptoms that would typically have people go to the hospital,” Huyer said. “It’s still work that we’re trying to work through.