CHICAGO — A top doctor at Loretto Hospital has resigned amid ongoing controversy over connected people receiving vaccinations from the West Side provider. The hospital’s board on Wednesday night announced the resignation of Dr. Anosh Ahmed, the chief operating officer and chief financial officer. “On behalf of the Board of Trustees, I want to thank Dr. Ahmed for his contributions to the Loretto Hospital community and we wish him the best in his future endeavors,” Edward M. Hogan, the hospital board chairman, said in a statement. Ahmed could not be reached for comment. The move follows an uproa...