Immunization notices have been mailed out to about 3,000 area students.
All elementary and high school students must provide Lambton Public Health with up to date immunization records or proof of exemption, or face suspension from school.
Lambton Public Health Immunization Team Supervisor Carshenan Lai said they're looking to hear back from parents and guardians by Tuesday, February 3.
"So if parents don't get back to us by February 3, then we send out suspension notices on February 10 and the official suspension day is March 10," said Lai.
Records include immunizations for diphtheria, tetanus, polio, mumps, rubella, measles, meningitis, whooping cough and chickenpox.
"So its important that parents know that immunizations are not automatically reported to the health unit and we do have multiple options to report," said Lai.
Records can be updated online through LPH's website, by phone at 226-254-8222 or in person at Lambton Public Health at 160 Exmouth Street.
If your child still requires an immunization, you're advised to contact your health care provider or visit Lambton Public Health's website for more information.
Last year, over 440 local students were suspended from school under the Immunization of School Pupils Act.
