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
- What is measles?
- What to do if you are exposed to measles
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and will be updated regularly, as the information may change as new cases are identified and current exposures become out of date.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 10, 2025
| Exposure Location |
City/Town |
Exposure Dates and Times |
Monitor for Symptoms Until |
|---|---|---|---|
|
Old Colony Church |
Wheatley |
|
|
|
Chatham-Kent Health Alliance Back Hallway Behind Emergency Department |
Chatham |
|
|
Chatham Chrysler |
Chatham |
May 16 between 2:55 PM and 5:00 PM |
June 6 |
| Exposure Location |
City/Town |
Exposure Dates and Times |
Monitor for Symptoms Until |
|---|---|---|---|
Ajax Rotary Ribfest (Ajax Downs Casino) |
Ajax |
May 25 between 11:00 AM and 8:00 PM May 24 between 2:00 PM and 10:00 PM May 24 between 10:00 AM and 10:45 AM |
June 15 June 14 June 14 |
Cineplex Odeon Cinemas – Lilo and Stitch (11:30 a.m. showing) concession area and washrooms |
Ajax |
May 24 between 11:00 AM and 4:00 PM
|
June 14 |
| Exposure Location |
City/Town |
Exposure Dates and Times |
Monitor for Symptoms Until |
|---|---|---|---|
Brantford General Hospital Labour and Delivery Emergency Room A Wing Tim Hortons |
Brantford |
May 26 between 8:06 PM and 11:06 PM May 25 between 5:09 PM and 10:22 PM May 11 between 8:00 PM and 10:00 PM
|
June 16 June 15 June 1 |
Conklin Medical Centre |
Brantford |
May 24 between 2:20 PM and 5:00 PM |
June 14 |
TK Liquidation |
Brantford |
May 23 between 3:00 PM and 5:00 PM |
June 13 |
Starbucks |
Brantford |
May 23 between 2:00 PM and 4:00 PM |
June 13 |
Houghton Public School |
Langton |
May 21 between 8:30 AM and 5:30 PM May 20 between 8:30 AM and 5:30 PM |
June 12 June 11 |
School bus |
n/a |
May 21 AM and PM May 20 AM and PM |
June 12 June 11 |
Lynden Park Mall Food Basics, 84 Lynden Rd |
Brantford |
May 12 between 7:30 PM and 9:30 PM |
June 2 |
Circle K/Esso |
Brantford |
May 12 between 7:00 PM and 9:00 PM |
June 2 |
Willett Urgent Care Centre |
Paris |
May 11 between 2:50 PM and 5:30 PM |
June 1 |
Thrive AbleLiving (The Willett) 238 Grand River St N |
Paris |
May 11 between 2:50 PM and 5:30 PM |
June 1 |
Haliburton, Kawartha, Pine Ridge District Health Unit
| Exposure Location |
City/Town |
Exposure Dates and Times |
Monitor for Symptoms Until |
|---|---|---|---|
Lindsay Square Mall |
Lindsay |
May 31 between 1:00 PM and 4:00 PM |
June 21 |
Hair Tones Salon |
Lindsay |
May 31 between 1:00PM and 3:45 PM |
June 21 |
Dollarama Lindsay |
Lindsay |
May 30 between 3:00 PM and 5:05 PM |
June 20 |
Dunsford District Elementary School |
Dunsford |
May 29 between 3:00 PM and 8:00 PM |
June 19 |
Ross Memorial Hospital |
Lindsay |
May 19 between 7:02 PM and 9:46 PM |
June 9 |
| Exposure Location |
City/Town |
Exposure Dates and Times |
Monitor for Symptoms Until |
|---|---|---|---|
Buzz Stop |
Stratford |
May 15 between 1:30 PM and 4:30 PM |
June 5 |
Fanfare Books |
Stratford |
May 15 between 9:30 AM and 7:00 PM May 14 between 9:30 AM and 7:00 PM May 13 between 12:45 PM and 7:00 PM |
June 5 June 4 June 3 |
Balzac’s Coffee |
Stratford |
May 14 between 4:00 PM and 6:15 PM |
June 4 |
Seaforth Community Hospital |
Seaforth |
May 14 between 11:15 AM and 1:30 PM |
June 4 |
Stratford Tailoring and Alterations |
Stratford |
May 13 between 10:00 AM and 12:15 PM |
June 3 |
Life Labs |
Stratford |
May 13 between 7:10 AM and 9:40 AM |
June 3 |
| Exposure Location |
City/Town |
Exposure Dates and Times |
Monitor for Symptoms Until |
|---|---|---|---|
Middlesex Hospital Alliance Four Counties Hospital Emergency Department |
Newbury |
May 23 between 10:06 AM and 2:00 PM |
June 13 |
Northeastern Public Health Unit
| Exposure Location | City/Town |
Exposure Dates and Times |
Monitor for Symptoms Until |
|---|---|---|---|
Ontario Northland Bus |
N/A |
March 29 between 3:15 PM and 10:00 PM |
April 19 |
Englehart Motel |
Englehart |
March 29 between 7:20 PM and 9:20 PM |
April 19 |
| Exposure Location |
City/Town |
Exposure Dates and Times |
Monitor for Symptoms Until |
|---|---|---|---|
North Brampton Medical Centre, including the pharmacy and physiotherapy clinic |
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 |
Brampton |
May 26 between 6:30 PM and 9:30 PM |
June 16 |
Shoppers Drug Mart - Unit B |
Brampton |
May 26 between 6:00 PM and 9:00 PM |
June 16 |
Dollar Wide |
Brampton |
May 26 between 5:45 PM and 9:00 PM |
June 16 |
IELTS Test Centre - BITTS Testing Services - Unit 230 |
Mississauga |
May 26 between 7:30 AM and 12:30 PM |
June 16 |
JJQ’s Billiards and Lounge Mississauga |
Mississauga |
Between May 24 at 11:00 PM and 4:30 AM on May 25 |
June 15 |
Cineplex Cinemas Winston Churchill |
Oakville |
Between May 24 at 8:20 PM and 2:10 AM on May 25 |
June 15 |
Browns Social House Erin Mills |
Oakville |
May 24 between 6:00 PM and 11:00 PM |
June 14 |
Raman's Salon & Spa |
Brampton |
May 24 between 3:00 PM and 7:00 PM |
June 14 |
Brampton Urgent Care Centre East - Unit 8 |
Brampton |
May 24 between 2:32 PM and 6:40 PM May 22 between 7:20 PM and 10:43 PM |
June 14 |
Toronto Pearson International Airport - Terminal 3, including any areas visited during arrival, customs, and exit processes |
Mississauga |
Between May 23 at 7:59 PM and 12:30 AM on May 24 |
June 14 |
Pakistan International Airline, Flight PIA 781 arriving from Pakistan (7:59 PM arrival time) |
N/A |
May 23 at 7:59 PM |
June 13 |
Chapters and Starbucks - Unit 1 |
Vaughan |
May 21 between 12:30 PM and 3:30 PM |
June 11 |
Southwestern Public Health Unit
| Exposure Location |
City/Town |
Exposure Dates and Times |
Monitor for Symptoms Until |
|---|---|---|---|
| Aylmer Medical Centre 424 Talbot St W |
Aylmer | May 15 between 10:30 AM and 1:00 PM | June 5 |
|
Woodstock Hospital Emergency Department, Emergency department waiting room and diagnostic imaging |
Woodstock |
May 13 between 9:03 AM and 5:23 PM May 12 between 8:30 PM and 11:12 PM May 11 between 12:07 PM and 2:22 PM |
June 3 June 2 June 1 |
Region of Waterloo Public Health
| Exposure Location |
City/Town |
Exposure Dates and Times |
Monitor for Symptoms Until |
|---|---|---|---|
Curex and Waterloo Guardian Pharmacy5-380 King St N |
Waterloo |
May 25 between 11:45 PM and 4:00 PM May 23 between 1:30 PM and 4:00 PM May 13 between 1:15 PM and 4:00 PM |
June 15 June 13 June 3 |
Waterloo Region Health Network @ Queen’s Blvd. (formerly St. Mary’s General Hospital) |
Kitchener |
May 25 between 11:00 AM and 5:45 PM May 24 between 1:30 PM and 5:00 PM May 14 between 5:30 AM and 8:25 AM |
June 15 June 14 June 4
|
LifeLabs |
Waterloo |
May 23 between 2:00 PM and 5:00 PM |
June 13 |
Dr. Erin Walker, Family Dentist |
St Clements |
May 22 between 10:00 AM and 12:05 PM |
June 12 |
Conestoga College, Doon Campus (Doon Main Building, E-Wing, 2nd floor classrooms/corridors and Starbucks) |
Kitchener |
May 21 between 2:00 PM and 6:30 PM |
June 11 |
Waterloo Region Health Network @ Midtown (formerly Grand River Hospital) |
Kitchener |
May 21 between 5:15 PM and 7:35 PM Between May 11 at 10:30 PM and 11:30 AM on May 12 May 11 between 10:00 AM and 7:00 PM |
June 11 June 2 June 1 |
Blockline Medical Clinic |
Kitchener |
May 20 between 1:30 PM and 4:15 PM |
June 10 |
Cook's Pharmacy |
Kitchener |
May 20 between 1:30 PM and 4:15 PM |
June 10 |
Rexall Pharmacy |
Kitchener |
May 17 between 9:30 PM and 11:59 PM May 12 between 6:05 PM and 9:00 PM |
June 7 June 2 |
Recharge and Play Wellness |
Waterloo |
May 17 between 10:15 AM and 2:00 PM |
June 7 |
Medicare Medical Centre |
Kitchener |
May 16 between 4:30 PM and 7:00 PM |
June 6 |
Cross Fit Elmira |
Elmira |
May 15 between 12:00 PM and 2:45 PM |
June 5 |
Grand River Transit route 204 iXpress Highland-Victoria |
N/A |
May 15 between 10:30 AM and 1:00 PM May 15 between 2:00 PM and 4:30 PM |
June 5 June 5 |
Franklin Public School |
Kitchener |
May 15 between 7:00 AM and 6:00 PM May 14 between 7:00 AM and 6:00 PM May 13 between 7:00 AM and 6:00 PM May 12 between 7:00 AM and 6:00 PM |
June 5 June 4 June 3 June 2 |
Centre for Family Medicine Building |
Kitchener |
May 15 between 3:20 PM and 5:50 PM |
June 5 |
Little Caesar's The Boardwalk |
Kitchener |
May 15 between 1:30 PM and 4:00 PM |
June 5 |
Indigo |
Kitchener |
May 14 between 3:30 PM and 6:00 PM |
June 4 |
Nat Lashes |
Kitchener |
May 14 between 10:30 AM and 6:30 PM May 13 between 10:30 AM and 6:30 PM |
June 4 June 3 |
Medical Centre One - The Boardwalk |
Waterloo |
May 14 between 12:30 PM and 3:30 PM |
June 4 |
Langdon Hall |
Cambridge |
May 14 between 5:50 PM and 11:00 PM |
June 4 |
430 The Boardwalk |
Waterloo |
May 14 between 12:30 PM and 3:30 PM |
June 4 |
Kitchener Urology Partners |
Kitchener |
May 13 between 10:45 AM and 1:30 PM |
June 3 |
Manitou Professional Centre Building |
Kitchener |
May 13 between 10:50 AM and 1:30 PM |
June 3 |
Taste of Seoul |
Kitchener |
May 13 between 12:00 PM and 2:05 PM |
June 3 |
Centre in the Square |
Kitchener |
May 13 between 12:10 PM and 3:30 PM |
June 3 |
751 Victoria St S Kitchener Medical Building |
Kitchener |
May 13 between 4:45 PM and 7:00 PM |
June 3 |
Sobey’s |
Kitchener |
May 13 between 4:30 PM and 6:50 PM |
June 3 |
Walmart Supercentre |
Kitchener |
May 13 between 12:15 PM and 3:00 PM |
June 3 |
Waterloo Nuclear Radiography |
Waterloo |
May 13 between 1:15 PM and 4:00 PM |
June 3 |
Medicare Walk-In |
Kitchener |
May 13 between 10:00 AM and 12:30 PM May 13 between 4:30 PM and 7:00 PM May 12 between 6:00 PM and 10:40 PM |
June 3 June 3 June 2 |
AR Kaufman YMCA |
Kitchener |
May 13 between 10:30 AM and 8:30 PM |
June 3 |
The Magnolia Health Centre |
Kitchener |
May 12 between 6:05 PM and 9:00 PM |
June 2 |
Zehrs Stanley Park |
Kitchener |
May 11 between 9:00 PM and 11:59 PM |
June 1 |
Cambridge Mill |
Cambridge |
May 11 between 12:00 PM and 4:00 PM |
June 1 |
Winterbourne Parochial Elementary School |
West Montrose |
May 11
|
June 1
|
Wellington-Dufferin-Guelph Public Health
| Exposure Location |
City/Town |
Exposure Dates and Times |
Monitor for Symptoms Until |
|---|---|---|---|
Exposure Location Guelph Academy of Dance - John F. Ross High School – E L Fox Auditorium (dance rehearsals) 21 Meyer Dr Guelph Academy of Dance - John F. Ross High School – E L Fox Auditorium (dance rehearsals) 21 Meyer Dr |
City/Town Guelph Guelph |
Exposure Dates and Times May 15 between 5:30 PM and 11:30 PM May 14 between 5:30 PM and 11:30 PM May 15 between 5:30 PM and 11:30 PM May 14 between 5:30 PM and 11:30 PM |
Monitor for Symptoms Until June 5 June 4 June 5 June 4 |
Exposure Location Guelph Academy of Dance - John F. Ross High School – E L Fox Auditorium (dance rehearsals) 21 Meyer Dr Guelph Youth Basketball Association - John F. Ross High School |
City/Town Guelph Guelph |
Exposure Dates and Times May 15 between 5:30 PM and 11:30 PM May 14 between 5:30 PM and 11:30 PM May 15 between 5:30 PM and 11:30 PM May 14 between 5:30 PM and 11:30 PM |
Monitor for Symptoms Until June 5 June 4 June 5 June 4 |
Exposure Location Guelph Academy of Dance - John F. Ross High School – E L Fox Auditorium (dance rehearsals) 21 Meyer Dr Sidekick Leadership Camp Parent Meeting (facilitated by UGDSB) - John F. Ross High School |
City/Town Guelph Guelph |
Exposure Dates and Times May 15 between 5:30 PM and 11:30 PM May 14 between 5:30 PM and 11:30 PM May 14 between 5:30 PM and 11:30 PM |
Monitor for Symptoms Until June 5 June 4 June 4 |
Windsor-Essex County Health Unit
| Exposure Location |
City/Town |
Exposure Dates and Times |
Monitor for Symptoms Until |
|---|---|---|---|
Exposure Location Windsor Regional Hospital - Metropolitan (Met) Campus Windsor Regional Hospital - Metropolitan (Met) Campus |
City/Town Windsor Windsor |
Exposure Dates and Times 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) 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) |
Monitor for Symptoms Until June 18
June 18
June 18
June 18
|
Exposure Location Windsor Regional Hospital - Metropolitan (Met) Campus Heritage Health Kingsville |
City/Town Windsor Kingsville |
Exposure Dates and Times 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) May 27 between 9:30 M and 12:15 PM |
Monitor for Symptoms Until June 18
June 18
June 17 |
Exposure Location Windsor Regional Hospital - Metropolitan (Met) Campus Erie Migration District School |
City/Town Windsor Kingsville |
Exposure Dates and Times 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) May 27 between 10:00 AM and 3:30 PM May 26 between 8:00 AM and 6:00 PM May 21 between 8:00 AM and 6:00 PM May 20 between 8:30 AM and 7:00 PM |
Monitor for Symptoms Until June 18
June 18
June 17 June 16 June 11 June 10 |
Exposure Location Windsor Regional Hospital - Metropolitan (Met) Campus Erie Shores HealthCare |
City/Town Windsor Leamington |
Exposure Dates and Times 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) 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) |
Monitor for Symptoms Until June 18
June 18
June 27 June 15 |
Exposure Location Windsor Regional Hospital - Metropolitan (Met) Campus TMC Kingsville Walk-in/Urgent Care |
City/Town Windsor Kingsville |
Exposure Dates and Times 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) May 27 between 10:49 M and 1:17 PM |
Monitor for Symptoms Until June 18
June 18
June 17 |
Exposure Location Windsor Regional Hospital - Metropolitan (Met) Campus Medical Laboratories of Windsor |
City/Town Windsor Leamington |
Exposure Dates and Times 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) May 26 between 10:00 AM and 12:10 PM |
Monitor for Symptoms Until June 18
June 18
June 16 |
Exposure Location Windsor Regional Hospital - Metropolitan (Met) Campus Essex Walk in Clinic |
City/Town Windsor Leamington |
Exposure Dates and Times 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) May 25 between 9:00 AM and 12:30 PM |
Monitor for Symptoms Until June 18
June 18
June 15 |
Exposure Location Windsor Regional Hospital - Metropolitan (Met) Campus Costco Wholesale |
City/Town Windsor Windsor |
Exposure Dates and Times 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) May 16 between 8:30 AM and 11:00 AM (Fuel Kiosk) May 15 between 8:30 AM and 11:00 AM (Fuel Kiosk) May 13 between 1:30 PM and 4:30 PM (Entire Building) |
Monitor for Symptoms Until June 18
June 18
June 6 June 5
June 3 |
Exposure Location Windsor Regional Hospital - Metropolitan (Met) Campus Real Canadian Superstore Talbot Street |
City/Town Windsor Leamington |
Exposure Dates and Times 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) May 15 between 5:30 PM and 8:30 PM |
Monitor for Symptoms Until June 18
June 18
June 5 |
Exposure Location Windsor Regional Hospital - Metropolitan (Met) Campus Eyewares of Windsor |
City/Town Windsor Windsor |
Exposure Dates and Times 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) May 13 between 3:15 PM and 5:45 PM |
Monitor for Symptoms Until June 18
June 18
June 3 |
| Exposure Location |
City/Town |
Exposure Dates and Times |
Monitor for Symptoms Until |
|---|---|---|---|
| Cortellucci Vaughan Hospital 3200 Major Mackenzie Dr W Emergency Department Waiting Room, Ambulatory Care Areas |
Vaughan | May 12 between 6:45 AM and 1:37 PM |
June 2 |
| Zet’s Restaurant 15 Jevlan Dr, Unit E |
Vaughan | May 11 between 12:55 PM and 3:35 PM |
June 1 |
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.
- 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).
- 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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