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Important updates

Did you recently receive a letter about immunizations required for school attendance?

Halton Region Public Health is sending letters to students in high school who are overdue for immunizations required under the Immunization of School Pupils Act (ISPA).

You may have received a letter because your child:

  • received immunizations that have not been reported to Public Health;
  • is missing a required vaccine; or
  • received vaccines that do not meet the requirements of Ontario's routine immunization schedule.

Please note: If you have recently reported your child’s immunization record or a valid exemption, you may still receive a letter due to processing times. If 10 -15 business days have passed since your submission, we encourage you to login to ICON to review your child’s record to verify it includes your updates, and that there are no additional vaccines required.

School and community immunization clinics

  • Halton Region Public Health is currently visiting schools to offer school immunization clinics. Eligible grade 7 students with parental consent will be offered Meningococcal Conjugate-ACYW-135 (Men-C-ACYW), Human Papillomavirus (HPV) 9-valent and Hepatitis B (HB) vaccines.
  • The community immunization clinics for students in grades 7 through 12 that are scheduled from Monday, December 18 to Friday, December 22, 2023 are fully booked. Limited walk-ins will be accepted.
  • Students in grades 7 and 8 can receive school-based vaccines during school immunization clinics from April to June 2024, and at community immunization clinics that will be scheduled in June 2024.
  • Students in grades 9 through 12 who have received letters that they are at risk for suspension can attend community immunization clinics from Thursday, January 25 to Friday, January 26 and Monday, January 29 to Friday, February 2, 2024. Eligible students can book an appointment online.
  • Visit Halton’s school immunization page for more information on school and community immunization clinics.
  • Additional community immunization clinics are being planned for early 2024 and will take place before the ISPA suspension period begins in March. Please check back regularly to book an appointment at a community immunization clinic in early 2024.

The Health Department leads efforts in Halton Region to prevent disease and optimize health for all citizens. Part of our work includes promoting immunization/vaccination, and monitoring compliance with provincial requirements for immunization/vaccination.

On this page, find access to information about immunization and a selection of preventable diseases.