Measles Exposures in Ontario

Ongoing measles transmission in Ontario is impacting multiple public health units. Detailed information on measles cases in Ontario can be found in the Measles in Ontario Enhanced Epidemiological Summary.

For each measles case reported in Ontario, a public health investigation is completed to identify places where people may have been exposed to the measles virus.

Individuals who are not protected against measles AND who were in places where they may have been exposed to a case of measles on the following places and dates of possible exposure should check the website for their local public health unit for more information.

Getting vaccinated is the best way to protect yourself against measles.

In response to the current outbreak, in addition to routine immunizations, some public health units are offering early doses of measles vaccine (i.e., a dose of MMR vaccine for infants 6 to 11 months; a second dose of measles-containing vaccine before the age of 4) in affected regions and communities where the risk of exposure to measles is higher. Please see Routine and Outbreak-related Measles Immunization Schedules for more information.

The information on this webpage is updated on Tuesdays and Fridays, or the next business day following a holiday. Please check your local public health unit website for updated information.

On this page:

Places and dates of exposure to a case of measles

Places visited by recent measles cases while infectious have been identified. Individuals who were in the following places during the dates and times specified should contact their local public health unit if they are not protected against measles. See the section What to do if you are exposed to measles to find out more.

These exposure sites have been compiled from public advisories issued by public health units and will be updated regularly, as the information may change as new cases are identified and current exposures become out of date. Please note: this list includes only known exposure sites and there may be sites that have not yet been identified. 

Last updated on on June 24, 2025

Algoma Public Health

Exposure Location

City/Town

Exposure Dates and Times

Monitor for Symptoms Until

Weber Family Farm
8355 Highway 17 E
Bruce Mines June 9 between 9:00 AM and 2:00 PM

June 7 between 10:00 AM and 8:00 PM
June 30

June 28
The Algoma Produce Auction (APA)
5241 Government Rd
Desbarats
June 6 between 10:00 AM and 1:30 PM
June 27

Chatham Kent Public Health

Exposure Location

City/Town

Exposure Dates and Times

Monitor for Symptoms Until

Thamesview Family Health Team
465 Grand Ave W                        

Chatham

June 4 between 2:15 PM and 5:00 PM

June 25

Old Colony Church
22046 County Rd

Wheatley

May 25 between 9:30 AM and 1:30 PM

June 15

Durham Region

Exposure Location

City/Town

Exposure Dates and Times

Monitor for Symptoms Until

Ajax Rotary Ribfest (Ajax Downs Casino)
50 Alexander’s crossing

Ajax

May 25 between 11:00 AM and 8:00 PM

June 15

Grand Erie Public Health Unit

Exposure Location

City/Town

Exposure Dates and Times

Monitor for Symptoms Until

Brantford General Hospital
200 Terrace Hill St

Labour and Delivery

Emergency Room

Brantford

 

June 3 between7:30 PM and 11:06 PM

May 26 between 8:06 PM and 11:06 PM

May 25 between 5:09 PM and 10:22 PM

 

 

June 24

June 16

June 15

Grey Bruce Public Health

Exposure Location

City/Town

Exposure Dates and Times

Monitor for Symptoms Until

Ashanti Coffee
39 Bruce St. S.

Thornbury

June 7 between 4:30 PM and 7:30 PM

June 28

Haliburton, Kawartha, Northumberland, Peterborough Health Unit

Exposure Location

City/Town

Exposure Dates and Times

Monitor for Symptoms Until

The Back40 Smoke House
289 George St. N #287

Peterborough

June 15 between 6:00 PM and 9:30 PM

July 6

Dairy Queen
828 Chemong Rd

Peterborough

June 15 between 4:00 PM and 6:10 PM

July 6

Shopper's Drug Mart
250 Charlotte St

Peterborough

June 5 between 3:00 PM and 5:40 PM
June 4 between 7:00 PM and 10:00 PM
June 2 between 4:00 PM and 10:00 PM

June 26
June 25
June 23

PRHC Emergency Department
1 Hospital Dr

Peterborough

June 5 between 9:29 AM and 3:02 PM

June 26

Peterborough Transit Bus


Line 22 - Community Bus Blue

Line 6 - Sherbrooke East





Line 6 - Sherbrooke West

N/A



June 5 between 2:45 PM and 5:00 PM
June 5 between 9:20 AM and 11:25 AM


June 4 between 4:45 PM and 7:15 PM
June 4 between 9:12 AM and 11:45 AM
June 3 between 4:45 PM and 7:15PM
June 3 between 9:12 AM and 11:45 AM
June 2 between 4:45 PM and 7:15 PM
June 2 between 9:12 AM and 11:45 AM


June 4 between 2:34 PM and 5:00 PM
June 4 between 7:34 AM and 10:30 AM
June 3 between 2:34 PM and 5:00 PM
June 3 between 7:34 AM and 10:30 AM
June 2 between 2:34 PM and 5:00 PM
June 2 between 7:34 AM and 10:30 AM



June 26
June 26


June 25
June 25
June 24
June 24
June 23
June 23


June 25
June 25
June 24
June 24
June 23
June 23

Greg's No Frills
230 George St N

Peterborough

June 4 between 4:00PM and 9:00PM

June 25

Jackson Creek Retirement Residence
481 Reid St

Peterborough

June 1 between 7:00 AM and 5:00 PM
May 31 between 7:00 AM and 5:00 PM

June 22
June 21

Lindsay Square Mall
401 Kent St W

Lindsay

May 31 between 1:00 PM and 4:00 PM

June 21

Hair Tones Salon
401 Kent St W

Lindsay

May 31 between 1:00PM and 3:45 PM

June 21

Dollarama Lindsay
363 Kent St W

Lindsay

May 30 between 3:00 PM and 5:05 PM

June 20

Dunsford District Elementary School
33 Dunsford Road

Dunsford

May 29 between 3:00 PM and 8:00 PM
May 28 between 3:00 PM and 8:00 PM

June 19
June 18

Halton Region Public Health Unit

Exposure Location

City/Town

Exposure Dates and Times

Monitor for Symptoms Until

3075 Hospital Gate – Medical Building

Oakville

June 12 between 2:10 PM and 7:30 PM

July 3

Huron Perth Public Health

Exposure Location

City/Town

Exposure Dates and Times

Monitor for Symptoms Until

Shell Station
5878 Line 34

Mitchell

June 6 between 8:00 AM and 10:00 AM

June 27

On Stage Dance Studio
172 Ontario St.

Stratford

June 5 between 5:50 PM and 9:45 PM

June 26

Shoppers Drug Mart
211 Ontario St.

Stratford

June 5 between 5:55 PM and 8:00 PM
June 4 between 4:00 PM and 6:00 PM

June 26
June 25

North Easthope Public School – Food Truck Night Playground Fundraiser
4672 Road 108

Stratford

June 5 between 4:30 PM and 7:30 PM

June 26

Long & McQuade
145 Erie St., Unit 4

Stratford

June 3 between 7:00 PM and 9:30 PM

June 24

Foodland
581 Downie St.

Stratford

June 3 between 7:00 AM and 9:15 AM

June 24

Peel Public Health

Exposure Location

City/Town

Exposure Dates and Times

Monitor for Symptoms Until

North Brampton Medical Centre, including the pharmacy and physiotherapy clinic
6475 Mayfield Rd

Brampton

May 27 between 11:30 AM and 3:15 PM

May 26 between 12:15 PM and 4:00 PM

June 17

June 16

Domino’s Pizza
10950 Goreway Dr

Brampton

May 26 between 6:30 PM and 9:30 PM

June 16

Shoppers Drug Mart - Unit B
10970 Airport Rd

Brampton

May 26 between 6:00 PM and 9:00 PM

June 16

Dollar Wide
125 Father Tobin Rd

Brampton

May 26 between 5:45 PM and 9:00 PM

June 16

IELTS Test Centre - BITTS Testing Services - Unit 230
7895 Tranmere Dr

Mississauga

May 26 between 7:30 AM and 12:30 PM

June 16

JJQ’s Billiards and Lounge Mississauga
3055 Dundas St W

Mississauga

Between May 24 at 11:00 PM and 4:30 AM on May 25

June 15

Cineplex Cinemas Winston Churchill
2081 Winston Park Dr

Oakville

Between May 24 at 8:20 PM and 2:10 AM on May 25

June 15

Region of Waterloo Public Health

Exposure Location

City/Town

Exposure Dates and Times

Monitor for Symptoms Until

Base Church
761 Sawmill Rd

Bloomingdale

June 1 between 10:00 AM and 2:00 PM

June 21

Foundation Christian School
28 Katherine St S

Montrose

May 30 between 9:00 AM and 5:30 PM

May 29 between 9:00 AM and 5:30 PM

June 20

June 19

Curex and Waterloo Guardian Pharmacy5-380 King St N

Waterloo

May 25 between 11:45 PM and 4:00 PM

June 15

Waterloo Region Health Network @ Queen’s Blvd. (formerly St. Mary’s General Hospital)
911 Queens Blvd
Emergency Department

Kitchener

May 25 between 11:00 AM and 5:45 PM

June 15

 

Windsor-Essex County Health Unit

Exposure Location

City/Town

Exposure Dates and Times

Monitor for Symptoms Until

Windsor Regional Hospital - Metropolitan (Met) Campus
1995 Lens Ave

Windsor

May 28 between 3:45 PM and 9:00 PM (Elevators, 3rd Floor Pediatric Department, Pediatric Diversion)

May 28 between 3:15 PM and 4:30 PM (Emergency Room: Triage and Waiting Room)

June 18

 

June 18

 

Heritage Health Kingsville
200 Main St E
Entire Building

Kingsville

May 27 between 9:30 M and 12:15 PM

June 17

Erie Migration District School
1620 Jasperson Dr
Entire Building, Including Daycare

Kingsville

May 27 between 10:00 AM and 3:30 PM

May 26 between 8:00 AM and 6:00 PM

June 17

June 16

Erie Shores HealthCare
194 Talbot St W

Leamington

May 27 between 11:00 AM and 10:00 PM (Diagnostic Imaging)

Between May 24 at 4:00 PM and 1:00 AM on May 25 (Emergency Department)

June 27

June 15

TMC Kingsville Walk-in/Urgent Care
273 Main St E
Entire Building

Kingsville

May 27 between 10:49 M and 1:17 PM

June 17

Medical Laboratories of Windsor
197 Talbot Street W
Entire Building

Leamington

May 26 between 10:00 AM and 12:10 PM

June 16

Essex Walk in Clinic
186 Talbot St. S
Entire Building

Leamington

May 25 between 9:00 AM and 12:30 PM

June 15

Wellington-Dufferin-Guelph Public Health

Exposure Location

City/Town

Exposure Dates and Times

Monitor for Symptoms Until

Orangeville Urgent Care Family Practice,
Orangeville Urgent Care Pharmasave,
Pain Care Clinic Orangeville (Shared waiting area)
33 Broadway Ave

Orangeville June 11 between 11:40 AM and 2:10 PM

June 9 between 9:00 AM and 11:30 AM
July 2

June 30

Shoppers Drug Mart
25 Broadway Ave

Orangeville

June 8 between 3:25 PM and 5:30 PM

June 29

Orangeville Toyota
713003 1st Line E

Orangeville

June 5 between 10:30 AM and 12:30 PM

June 5 between 4:00 PM and 6:00 PM

June 26

June 26

Walmart
95 First St

Orangeville

June 5 between 10:45 AM and 1:00 PM

June 26

Ontario Home Health
170 Lakeview Ct

Orangeville

June 5 between 12:00 PM and 2:30 PM

June 26

Orangeville CIBC
2 First St

Orangeville

June 4 between 10:30 AM and 1:30 PM

June 25

Greystones Cafe
63 Broadway

Orangeville

June 4 between 12:00 PM and 3:00 PM

June 25

What is measles?

Measles is a respiratory infection that is highly contagious. Individuals with measles spread the virus by coughing or sneezing into the air. It can also be transmitted by touching your eyes, nose, or mouth after touching an infected surface. Symptoms of measles include fever, cough, runny nose, red watery eyes, and a red blotchy rash.

What to do if you are exposed to measles

If you are protected against measles, it is very unlikely that you will develop the disease. As a precautionary measure, watch for the onset of measles symptoms until 21 days after the date of exposure (see Places and dates of possible exposure to a case of measles) to find out more.

People are considered protected if they have at least one of the following:

  • Proof of vaccination with two valid doses of measles-containing vaccine (e.g. MMR vaccine)
  • Blood work showing antibodies to measles
  • Documentation of prior laboratory-confirmed measles infection
  • Are born before 1970 (with the exception of health care workers)
    • All health care workers require evidence of vaccination with two valid doses of measles-containing vaccine or bloodwork suggestive of immunity (measles IgG reactive) regardless of year of birth

If you do not have any of the above, you are not protected against measles.

If you think you have been exposed and you are not protected against measles or if you are unsure about your immunization history:

  • If you attend or work at a school, childcare, or healthcare setting, you MUST stay home and contact your local public health unit for further direction.  
  • If you have had no doses of MMR vaccine, stay at home and contact your local public health unit for further direction.
  • If you have had one dose of MMR vaccine, call your healthcare provider or local public health unit to receive an additional dose of MMR vaccine. Notify your healthcare provider of your exposure so that they can take appropriate precautions to limit the spread of measles. Unless you work in a healthcare setting, you can immediately return to work, school, or daycare after you get a second dose of measles-containing vaccine.
  • If you (or a family member) are at high risk of complications as listed below, contact your healthcare provider or local public health unit to discuss options to reduce the risk of measles infection through vaccination or a product called immunoglobulin. For these to be effective, they must be given very soon after exposure.
    • Babies under one year age who have not received measles vaccine
    • People with a severely weakened immune system
    • Pregnant individuals who are not protected against measles
  • If you are uncertain about your vaccination status, call your healthcare provider or your local public health unit to determine if you have received an MMR vaccine in the past.
    • If you develop symptoms and need medical care, call ahead before you visit the doctor, clinic, or hospital to inform them of your exposure to measles so they can prepare for your arrival and take appropriate precautions.
    • If you develop symptoms and do not need medical care, call your local public health unit.
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Contact the Department

Immunization and Vaccine Preventable Diseases

ivpd@oahpp.ca

Updated 24 June 2025