Municipal bylaws banning people from feeding deer may not help prevent the spread of Lyme disease, according to a public health official. Saint John council voted on Tuesday to refer the idea of a bylaw banning people from feeding deer to the city's ...Dr. Scott Giffin, a provincial medical officer of health in Saint John, said he isn't convinced the proposed bylaw would help prevent the spread of Lyme disease."I think the evidence for culling deer herds as a way to control ticks is weak at best and there may be many other reasons for culling deer herds that fall ahead of Lyme disease, that's for sure," he said.