More than 500 elementary and secondary students in Sarnia and Lambton County, Ontario, are at risk of being suspended from school starting March 10, 2026. According to Lambton Public Health, these students have incomplete immunization records on file.
As of March 9, 2026, the health unit identified 513 students who have not met the requirements of the provincial Immunization of School Pupils Act. This law requires students to stay up to date on vaccines for several diseases, including measles, mumps, polio, tetanus, diphtheria, and pertussis.
Health officials note that a student may be flagged for suspension even if they have already received all their shots. This situation often happens when updated vaccination information is not shared with the health unit after a child visits their doctor.
To avoid suspension or return to class, families must provide updated records or a valid exemption form to the health unit immediately. These rules are part of a province-wide effort by the Ontario Ministry of Health to keep vaccination rates high in local schools.
