Between June 1, 2026 and August 31, 2026, municipalities within the Region of Waterloo will be conducting a larviciding program under the authority of the Region of Waterloo Medical Officer of Health to prevent the development of mosquito larvae into vectors of West Nile Virus.

This morning, 1,351 elementary students with out-of-date vaccination records were suspended under the Immunization of School Pupils Act (ISPA). Students who have been suspended can return to school once their vaccination records are up to date, or a valid exemption is on file. 

Elementary school suspensions will take effect on Thursday, May 7, 2026, for those who received a suspension order from Public Health. This applies to elementary school students who do not have up-to-date vaccination records or a valid exemption on file by Monday, May 4, 2026, at 4:30 p.m. 

Waterloo Region - This morning, 704 secondary students with out-of-date vaccination records were suspended under the Immunization of School Pupils Act (ISPA). "Vaccines are one of the most effective ways to protect your child from serious illness," said Dr.