The Simcoe Muskoka District Health Unit (SMDHU) is reminding secondary school students to update their immunization records. Students have until Tuesday, September 26th, to do so, in line with the Immunization of School Pupils Act, and avoid suspension. In a release, the health unit says over 4,500 suspension orders have been mailed to secondary school students in Simcoe Muskoka. “This is the third notice that most of these students have recei…