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Measles – March 10, 2019

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March 10, 2019

With recent cases of measles in Ontario and other areas of Canada, it is recommended to check that clients are up-to-date with their immunizations, including the measles, mumps, rubella (MMR) vaccine. 

As per the Publicly Funded Immunization Schedule for Ontario, adults who have only received 1 dose of MMR vaccine are eligible to receive a second dose:

  • if they are health care workers
  • if they are post-secondary students
  • if they are planning to travel to areas where disease is a concern
  • based on health care provider’s clinical judgement

In most cases, individuals born before 1970 have natural immunity, but may also be immunized. Please see below for more information.

Infants between 6–11 months of age should be immunized if travelling to an area where measles is a concern. Please Note: Two additional doses are required ≥12 months of age and at appropriate intervals.

Criteria for Measles Immunity (as per the Canadian Immunization Guide, Evergreen edition)

Documentation of vaccination:

Children 12 months to less than 18 years of age: 2 doses

Adults 18 years of age and older born in or after 1970: 1 dose

OR

History of laboratory confirmed infection

OR

Laboratory evidence of immunity

OR

Born before 1970

Documentation of vaccination with 2 doses (regardless of year of birth)

OR

History of laboratory confirmed infection

OR

Laboratory evidence of immunity

Documentation of vaccination:

If born in or after 1970: 2 doses

If born before 1970: 1 dose

OR

History of laboratory confirmed infection

OR

Laboratory evidence of immunity

Documentation of vaccination:

If born in or after 1970: 2 doses

If born before 1970: consider 1 dose

if no documentation of receipt of measles-containing vaccine

OR

History of laboratory confirmed infection

OR

Laboratory evidence of immunity

Documentation of vaccination with 2 doses (regardless of year of birth)

OR

History of laboratory confirmed infection

OR

Laboratory evidence of immunity

Please contact a member of the Immunization Team if you have further questions at 1-800-660-5853.

Please share this information with all Health Care Providers in your Office.