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 visit Huron Perth Public Health, Southwestern Public Health, Grand Erie Public Health, and Windsor-Essex County Health Unit for more information.

The information on this webpage is updated on Tuesdays and Fridays. 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and will be updated regularly, as the information may change as new cases are identified and current exposures become out of date.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 April 17, 2025

Chatham Kent Public Health

Exposure Location	City/Town	Exposure Dates and Times	Monitor for Symptoms Until
Tilbury Walk-In Clinic 15 Mill St E	Tilbury	April 4 between 2:15 PM and 4:30 PM April 2 between 9:00 AM and 11:30 AM	April 25 April 23
Chatham-Kent Health Alliance 80 Grand Ave W Emergency Department	Chatham	March 28 between 9:40 PM and 11:50 PM	April 18
Food Basics 448 St Clair St	Chatham	March 25 between 3:15 PM and 6:00 PM	April 15
Circle K Tilbury 90 Queen St N	Tilbury	March 22 between 9:30 AM and 11:40 AM	April 12
No Frills Tilbury 59 Mill St	Tilbury	March 22 between 9:15 AM and 11:30 AM	April 12
Bethel Church Youth Group 35 McNaughton Ave	Wallaceburg	Between March 21 at 5:30 PM and 1:00 AM on March 22	April 12
Shoppers Drug Mart 416 St Clair St	Chatham	March 19 between 4:30 PM and 8:00 PM March 18 between 4:30 PM and 7:30 PM	April 9 April 8
Tim Horton’s Restaurant 848 Dufferin Ave	Wallaceburg	March 18 between 1:30 PM and 4:30 PM	April 8

Grand Erie Public Health Unit

Exposure Location	City/Town	Exposure Dates and Times	Monitor for Symptoms Until
Houghton Public School RR #5	Langton	April 10 between 8:30 AM and 5:30 PM April 8 between 8:30 AM and 5:30 PM March 20 between 8:30 AM and 5:30 PM March 19 between 8:30 AM and 5:30 PM March 18 between 8:30 AM and 5:30 PM	May 1 April 29 April 10 April 9 April 8
Eat & Drink Norfolk CIBC Auditorium Building #9, Norfolk County Fairgrounds 172 South Dr	Simcoe	April 5 between 6:30 PM and 9:00 PM	April 26
Norfolk General Hospital 365 West St Emergency Department	Simcoe	March 18 between 4:10 PM and 6:40 PM	April 8

Exposure Location

City/Town

Exposure Dates and Times

Monitor for Symptoms Until

Houghton Public School
RR #5

Langton

April 10 between 8:30 AM and 5:30 PM

April 8 between 8:30 AM and 5:30 PM

March 20 between 8:30 AM and 5:30 PM

March 19 between 8:30 AM and 5:30 PM

March 18 between 8:30 AM and 5:30 PM

May 1

April 29

April 10

April 9

April 8

Eat & Drink Norfolk CIBC Auditorium Building #9, Norfolk County Fairgrounds
172 South Dr

Simcoe

April 5 between 6:30 PM and 9:00 PM

April 26

Norfolk General Hospital
365 West St
Emergency Department

Simcoe

March 18 between 4:10 PM and 6:40 PM

April 8

Grey Bruce Public Health

Exposure Location	City/Town	Exposure Dates and Times	Monitor for Symptoms Until
Brightshores Health System’s Owen Sound Hospital – Emergency Room 1800 8th St E	Owen Sound	Between April 2 at 9:37 PM and 8:28 AM on April 3	April 24

Huron Perth Public Health

Exposure Location	City/Town	Exposure Dates and Times	Monitor for Symptoms Until
Wingham & District Hospital 270 Carling Terrace Diagnostic Imaging Area	Wingham	April 9 between 9:15 AM and 12:05 PM	April 30
St. Joseph's Catholic Church 96 Huron St	Stratford	April 5 between 1:00 PM and 4:30 PM	April 26
Long & McQuade Music Instruments 145 Erie St, Unit 4	Stratford	April 5 between 9:55 AM and 12:35 PM	April 26
Ross' Bike Works 38 Wellington St	Stratford	April 5 between 10:10 AM and 12:10 PM	April 26
C and K Custom Kovers and Kathy’s Dry Goods 6376 Rd 121	Poole	April 4 between 9:00 AM and 11:30 AM April 1 between 8:00 AM and 7:00 PM March 31 between 8:00 AM and 7:00 PM	April 25 April 22 April 21
Stratford General Hospital 46 General Hospital Dr Emergency Department Waiting Room	Stratford	April 5 between 10:30 AM and 1:30 PM March 28 between 11:10 AM and 1:10 PM	April 26 April 18
Wingham and District Hospital 270 Carling Terrace Emergency Room Department	Wingham	March 30 between 9:00 PM and 11: 00 PM March 30 between 1:49 PM and 6:00 PM March 29 between 12:00 AM and 1:15 AM March 28 between 9:39 PM and 11:59 PM	April 20 April 20 April 19 April 18
IDA Listowel Pharmacy and Care Clinic C-975 Wallace Ave N	Listowel	March 29 between 12:30 PM and 3:00 PM	April 19
KFC 720 Main St E	Listowel	March 28 between 6:30 PM and 9:30PM	April 18
Listowel Memorial Hospital 255 Elizabeth St E Emergency Department Emergency Department Waiting Room	Listowel	March 28 between 9:07 AM and 12:21 PM March 24 between 2:13 PM and 11:45 PM March 23 between 1:51 PM and 10:31 PM	April 18 April 14 April 13
Lavish Salon & Beauty Spa 167 Inkerman St W	Listowel	March 22 between 8:00 AM and 4:00 PM March 20 between 3:00 PM and 8:00 PM	April 12 April 10

Lambton Public Health

Exposure Location	City/Town	Exposure Dates and Times	Monitor for Symptoms Until
Bluewater Health Petrolia 450 Blanche St Emergency Department	Petrolia	Between April 7 at 7:30 PM and 2:00 AM on April 8	April 29
Bluewater Health Sarnia 89 Norman St Emergency Department	Sarnia	April 8 between 5:00 AM and 1:30 PM Between March 19 at 7:00 PM and 2:00 AM on March 20	April 29 April 10
Lambton Central Collegiate & Vocational Institute 4141 Dufferin Ave	Petrolia	April 3 between 8:00 AM and 4:30 PM	April 24
Peoples Church 3888 London Line	Wyoming	April 2 between 6:30 PM and 10:30 PM March 30 between 6:00 PM and 11:00 PM March 30 between 9:30 AM and 3:30 PM	April 23 April 20 April 20
Sarnia Upward Basketball 707 Talfourd St Celebration Game Practice	Sarnia	March 22 between 5:45 PM and 10:00 PM March 22 between 10:00 AM and 3:00 PM	April 12 April 12
Bethel Pentecostal Church 1565 London Line	Sarnia	March 21 between 7:00 PM and 10:00 PM	April 11
ARI Pediatric Dentistry Sarnia 1323 Exmouth St	Sarnia	March 21 between 9:30 AM and 2:30 PM	April 11
Confederation Central School 2500 Confederation Line	Sarnia	March 21 between 8:00 AM and 5:00 PM March 20 between 8:00 AM and 5:00 PM March 19 between 8:00 AM and 5:00 PM March 18 between 8:00 AM and 5:00 PM	April 11 April 10 April 9 April 8
First Student Sarnia Bus #8561 (Cat Bus) Confederation Central School & Gregory A. Hogan School bus routes	Sarnia	March 19 between 2:25 PM and 4:45 PM	April 9

Middlesex London Health Unit

Exposure Location	City/Town	Exposure Dates and Times	Monitor for Symptoms Until
White Oaks Mall 1105 Wellington Rd	London	April 6 between 6:30 PM and 11:00 PM	April 27
LHSC Victoria Hospital 800 Commissioners Rd E Adult Emergency Department	London	April 6 between 8:05 AM and 10:15 AM March 23 between 1:19 PM and 3:46 PM	April 27 April 13
LHSC University Hospital 339 Windermere Road Emergency Department	London	April 1 between 11:59 AM and 2:08 PM	April 22
Casa Cubana 411 Hamilton Rd	London	March 29 between 4:30 PM and 9:30 PM	April 19
Jehovah’s Witness Convention 459 Second St	London	March 29 between 9:30 AM and 6:00 PM	April 19
Carling Heights Optimist Community Centre 656 Elizabeth St	London	March 29 between 2:40 PM and 8:30 PM March 29 between 9:00 AM and 1:00 PM	April 19 April 19
Costco Wholesale 3140 Dingman Dr	London	March 29 between 1:30 PM and 4:00 PM	April 19
LHSC Victoria Hospital 800 Commissioners Rd E B5 Pod 1 & 2 OB and GYNE Obstetrical Ultrasound B5 OB Pod 1 & 2 (waiting room) B5 UltrasoundB5 Pediatric Cardiology General Surgery	London	March 28 between 9:00 AM and 1:21 PM March 28 between 9:39 AM and 12:09 PM March 25 between 7:00 AM and 2:00 PM March 25 between 11:15 AM and 3:00PM	April 18 April 18 April 15 April 15
St Joseph’s Hospital Urgent Care Centre (UCC) 268 Grosvenor St	London	March 23 between 10:00 AM and 2:00 PM	April 13
St. Michael's Parish 511 Cheapside St	London	March 22 between 5:00 PM and 8:00 PM March 15 between 5:00 PM and 8:00 PM	April 12 April 5
CF Masonville Place 1680 Richmond St	London	March 22 between 2:00PM and 6:30 PM	April 12
Tim Hortons 1322 Commissioners Rd W	London	March 21 between 7:45 PM and 9:55 PM	April 11
VIA Rail Train 83 from Toronto to London Train 82 from London to Toronto	N/A	March 21 between 4:10 PM and 8:30 PM March 21 between 6:20 AM and 10:50 AM	April 11 April 11
VIA Rail London 205 York St	London	March 21 between 6:05 AM and 8:20 AM	April 11
Walmart 1280 Fanshawe Park Rd W	London	March 20 between 2:15 PM and 5:00 PM	April 10
Costco 693 Wonderland Rd N	London	March 20 between 1:00 PM and 4:00 PM	April 10

Northeastern Public Health Unit

Exposure Location	City/Town	Exposure Dates and Times	Monitor for Symptoms Until
Ontario Northland Bus From: Bus Terminal in North Bay Scheduled Departure: 4:15 PM To: Bus Terminal in Timmins Scheduled Arrival: 10:00 PM	N/A	March 29 between 3:15 PM and 10:00 PM	April 19
Englehart Motel 334416 ON-11	Englehart	March 29 between 7:20 PM and 9:20 PM	April 19

North Bay Parry Sound Public Health Unit

Exposure Location	City/Town	Exposure Dates and Times	Monitor for Symptoms Until
North Bay Regional Health Centre 50 College Dr East Main Entrance Lobby, Retail Pharmacy, Hallways, Common Areas	North Bay	Between April 1 at 4:30 PM and 12 AM on April 3	April 21
Ontario Northland Bus From: Bus Terminal in North Bay Scheduled Departure: 4:15 PM To: Bus Terminal in Timmins Scheduled arrival: 10:00 PM	N/A	March 29 between 3:15 PM and 10:00 PM	April 19
Northgate Shopping Centre 1500 Fisher St	North Bay	March 29 between 3:15 PM and 6:15 PM	April 19
Ontario Northland Bus Terminal 100 Station Rd	North Bay	March 29 between 3:15 PM and 6:15 PM	April 19
Ontario Northland Bus From: Bus Terminal in North Bay Scheduled Departure: 3:45 PM To: Bus Terminal in Sudbury Scheduled Arrival: 5:20 PM	N/A	March 29 between 3:15 PM and 5:30 PM	April 19
Ontario Northland Bus From: Veteran’s Park in Cobden Scheduled Departure: 12:00 PM To: Bus Terminal in North Bay Scheduled Arrival: 3:15 PM	N/A	March 29 between 12:00 PM and 3:15 PM	April 19

Renfrew County and District Health Unit

Exposure Location	City/Town	Exposure Dates and Times	Monitor for Symptoms Until
Veteran's Park 30 Pembroke St	Cobden	March 29 between 11:30 AM and 2:00 PM	April 19
Ontario Northland Bus From: Veteran’s Park in Cobden Scheduled Departure: 12:00 PM To: Bus Terminal in North Bay Scheduled Arrival: 3:15PM	N/A	March 29 between 12:00 PM and 3:15 PM	April 19
Pronto 3520 Petawawa Blvd	Petawawa	March 29 between 1:00 PM and 3:15 PM	April 19

Simcoe Muskoka District Health Unit

Exposure Location	City/Town	Exposure Dates and Times	Monitor for Symptoms Until
Royal Victoria Health Centre 201 Georgian Dr Emergency Department Orange Zone and Triage Area	Barrie	March 30 between 6:30 PM and 11:45 PM	April 20
CIBC 23 Mapleview Dr W	Barrie	March 27 between 2:45 PM and 5:30 PM	April 17
Walmart 35 Mapleview Dr W	Barrie	March 27 between 2:45 PM and 5:30 PM	April 17
Fika Cannabis 33 Mapleview Dr W	Barrie	March 27 between 3:30 PM and 6:00 PM	April 17
Rexall Pharmacy 567 Essa Rd	Barrie	March 27 between 3:30 PM and 6:00 PM	April 17

South East Health Unit

Exposure Location	City/Town	Exposure Dates and Times	Monitor for Symptoms Until
Prince Edward County Memorial Hospital 403 Picton Main St	Prince Edward County	April 11 between 12:00 PM and 3:30 PM	May 2
Cineplex Kingston 626 Gardiners Rd A Minecraft movie’s 4:35 p.m. showing; the concession area and bathrooms	Kingston	April 10 between 4:20 PM and 8:00 PM	May 1
Lennox & Addington County General Hospital 8 Richmond Park Dr Emergency Department	Napanee	April 10 between 7:00 PM and 11:47 PM	May 1
Tamworth Elementary School 6668 Wheeler St	Tamworth	Between April 3 and April 10	May 1
Kingston Family Health Team – Centennial Family Physician’s Office (including onsite LifeLabs patient service centre) 200 – 2437 Princess St	Kingston	April 7 between 3:00 PM and 5:35 PM	April 28
Red’s Diner 2223 Hamilton Rd	Trenton	April 6 between 10:30 AM and 1:30 PM	April 27
Tim Hortons 661 Cataraqui Woods Dr	Kingston	April 5 between 8:30 AM and 11 AM	April 26
Tamworth Post Office 708 Addington St	Tamworth	April 4 between 4:10 PM and 6:10 PM	April 25
Foodland 23 George Wright Blvd	Picton	April 4 between 11:00 AM and 1:20 PM	April 25
Gillingham Brewing Company 1316 Wilson Rd	Bloomfield	April 4 between 3:30PM and 7:30 PM	April 25
Nicholson Catholic College 301 Church St	Belleville	April 4 between 8 AM and 5 PM April 3 between 8 AM and 5 PM April 2 between 8 AM and 5 PM	April 25 April 24 April 23
VIA Rail Train 66, Car 3 from Belleville to Kingston	N/A	April 4 between 5:10 PM and 8 PM	April 25
Hotel Dieu Hospital Urgent Care 166 Brock St	Kingston	April 3 between 11:00 AM and 5:00 PM	April 24
Megabus From: Kingston terminal (1175 John Counter Blvd) To: Scarborough Library	N/A	March 31 between 4:35 PM and 9:15 PM	April 21
Duncan McArthur Hall 511 Union St	Kingston	March 30 between 11:00 AM and 10:00 PM March 29 between 5:00 PM and 8:00 PM	April 20 April 19

Southwestern Public Health Unit

Exposure Location	City/Town	Exposure Dates and Times	Monitor for Symptoms Until
Tillsonburg District Memorial Hospital 167 Rolph St General Area, Emergency Department	Tillsonburg	March 31 between 10:55 AM and 1:17 PM March 25 between 8:44 AM and 12:45 PM March 18 between 7:40 PM and 9:47 PM	April 21 April 15 April 8
St. Thomas Elgin General Hospital 189 Elm St Emergency Department	St. Thomas	March 26 between 1:13 PM and 3:35 PM (exam room) March 26 between 1:00 PM and 3:13 PM March 25 between 12:20 PM and 2:53 PM March 19 between 7:40 AM and 11:40 AM March 18 between 1:50 AM and 6:30 AM	April 16 April 16 April 15 April 9 April 8
Woodstock Hospital 310 Julianna Dr Emergency Department	Woodstock	March 26 between 2:33 PM and 4:43 PM	April 16
Alexandra Hospital 29 Noxon St Waiting Room and Diagnostic Imaging Department	Ingersoll	March 19 between 9:35 AM and 1:35 PM	April 9

Toronto Public Health

Exposure Location	City/Town	Exposure Dates and Times	Monitor for Symptoms Until
Coca-Cola Coliseum 19 Nunavut Rd	Toronto	April 1 between 5:30 PM and 11:59 PM	April 22
Fantasy Fair, Woodbine Mall 500 Rexdale Blvd	Etobicoke	March 30 between 11:30 AM and 5:00 PM	April 20
VIA Rail Train 83, Train Car 3 from Toronto to London Train 82, Train Car 3 from London to Toronto	N/A	March 21 between 4:10 PM and 8:30 PM March 21 between 6:20 AM and 10:50 AM	April 11 April 11
Pizzeria Libretto 155 University Ave	Toronto	March 21 between 11:50 AM and 4:30 PM	April 11

Region of Waterloo Public Health

Exposure Location	City/Town	Exposure Dates and Times	Monitor for Symptoms Until
Jembrook Welding 6918 Middlebrook Rd	West Montrose	April 4 between 7:30 AM and 8:00 PM April 3 between 7:30 AM and 8:00 PM April 2 between 7:30 AM and 8:00 PM April 1 between 7:30 AM and 8:00 PM	April 25 April 24 April 23 April 22
Region of Waterloo International Airport (YKF) Main Terminal 4881 Fountain St N	Breslau	Between March 29 at 8:20 PM to 1:00 AM on March 30	April 20
Flair Airlines, Flight F82431 - Puerto Vallarta, Mexico (PVR) to Region of Waterloo (YKF)	N/A	March 29	April 19
Grand River Hospital 835 King St W Emergency Department	Kitchener	March 29 between 4:00 PM and 7:00 PM	April 19
Three Bridges Old Colony Christian School 2043 Three Bridges Rd	St Jacobs	Between March 26 and March 28	April 18
John BM Martin Manufacturing 4047 Hessen Strasse St	St Clements	March 26 between 6:40 AM and 9:30 AM March 24 between 6:30 AM and 7:00 PM	April 16 April 14
Woolwich Community Health Centre (Wellesley) 1401 Queens Bush Rd	Wellesley	March 25 between 5:15 PM and 9:00 PM	April 15
Pharmasave Campus 170 University Ave W	Waterloo	March 21 between 11:30 AM and 2:00 PM	April 11
Shoppers Drug Mart 50 Weber St N	Waterloo	March 21 between 12:15 PM and 2:30 PM	April 11
51 Benton St	Kitchener	March 18 between 4:15 PM and 7:15 PM	April 8

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 Emergency Department, 3rd floor Pediatrics	Windsor	April 9 between 7:00 PM and 10:30 PM	April 30
Erie Shores HealthCare 194 Talbot St W	Leamington	April 7 between 8:40 AM and 9:40 AM (Emergency Department) Between 8:35 AM on April 3 and 12:20 AM on April 4 (Emergency Department) March 26 between 12:00 PM and 6:35 PM (Main entrance and Emergency Department) March 23 at 9:15 PM to March 24 at 10:20 AM (Emergency Department) March 18 between 2:30 PM and 10:40 PM March 18 between 8:35 AM and 11:45 AM	April 28 April 25 April 16 April 13 April 8 April 8
TMC Kingsville Walk-in/Urgent Care 273 Main St E	Kingsville	April 8 between 3:55 PM and 7:00 PM (Waiting rooms and Patient Assessment Rooms) April 7 between 12:10 PM and 2:20 PM (Waiting rooms and Patient Assessment Rooms) April 7 between 1:40 PM and 3:45 PM April 7 between 2:05 PM and 5:10 PM (Waiting rooms and Patient Assessment Rooms) April 6 between 1:05 PM and 3:20 PM (Waiting rooms and Patient Assessment Rooms) April 5 between 11:25 AM and 2:00 PM (Waiting rooms and Patient Assessment Rooms) April 4 between 10:05 AM and 1:20 PM (Waiting rooms and Patient Assessment Rooms) April 2 between 9:00 AM and 11:45 AM (Waiting rooms and Patient Assessment Rooms) March 28 between 8:40 AM and 11:30 AM (Waiting Rooms and Patient Assessment Rooms) March 26 between 11:00 AM and 1:45 PM (Main Entrance and Waiting Room) March 25 between 9:50 AM and 12:40 PM (Waiting Rooms and Patient Assessment Rooms)	April 29 April 28 April 28 April 28 April 27 April 26 April 25 April 23 April 18 April 16 April 15
Central Erie Shores Walk In Clinic 33 Princess Ave Entire Building	Leamington	April 7 between 11:00 AM and 5:30 PM	April 28
La Hacienda Restaurant 25 Talbot St E Entire Building	Leamington	April 7 between 7:30 PM and 9:45 PM	April 28
Burger King Restaurant – Leamington 300 Erie St S Entire Building	Leamington	April 6 between 4:00 PM and 8:00 PM	April 27
FreshCo - Kingsville 430 Main St Entire Building	Kingsville	April 6 between 11:00 AM and 1:30 PM	April 27
Kingsville Home Hardware Building Centre 226 Main St W Entire Building	Kingsville	April 5 between 8:00 AM and 10:15 AM	April 26
Canadian Tire – Leamington 262 Erie St S Entire Building	Leamington	April 5 between 8:30 AM and 10:45 AM	April 26
Christ Church Colchester 190 Bagot St Church Building	Colchester	April 5 between 1:45 PM and 5:15 PM	April 26
Movati Athletic Kingsville 313 Main St E Entire Building	Kingsville	April 5 between 11:00 AM and 2:00 PM	April 26
Bank Of Commerce Building 1400-100 Ouellette Ave Entire Building including Republik Asian Eatery	Windsor	Between April 4 at 7:30 PM and 12:00 AM April 5	April 26
Dr. Robin Deans, Optometrist 1270 Walker Rd Entire Medical Clinic	Windsor	April 4 between 3:50 PM and 6:55 PM	April 25
Multi-Food Super Market 799 Crawford Ave Entire Building	Windsor	April 4 between 5:10 PM and 7:30 PM	April 25
Princess Centre Leamington 33 Princess St Entire Building	Leamington	April 4 between 7:45 AM and 7:30 PM April 3 between 7:45 AM and 7:30 PM	April 25 April 24
Maplewood Centre 341 Talbot St N Subway restaurant, Total Tech Surveying	Essex	April 3 between 1:30 PM and 4:30 PM	April 24
Leamington District Secondary School 80 Oak St W Entire Building	Leamington	April 3 between 8:15 AM and 4:15 PM April 2 between 8:15 AM and 4:15 PM April 1 between 8:15 AM and 4:15 PM March 27 between 8:15 AM and 4:15 PM March 26 between 8:15 AM and 4:15 AM March 25 between 8:15 AM and 4:15 AM	April 24 April 23 April 22 April 17 April 16 April 15
Sunshine Drugs IDA Kingsville Pharmacy 274 Main St E Entire Building	Kingsville	April 2 between 9:00 AM and 11:45 AM	April 23
Real Canadian Superstore Talbot Street 201 Talbot St E Entire Building	Leamington	April 2 between 4:30 PM and 8:00 PM	April 23
Blytheswood Old Colony Church 31 Pickwick Dr Entire Building	Leamington	March 30 between 9:30 AM and 1:30 PM	April 20
Medical Lab of Windsor 5841 Malden Rd Entire Building	LaSalle	March 29 between 2:00 PM and 4:15 PM	April 19
TMC Urgent Care Walkin Clinic 13278 Tecumseh Rd E Entire Medical Building	Tecumseh	March 29 between 1:00PM and 3:15PM March 24 between 12:00 PM and 10:00 PM	April 19 April 14
Erie Migration District School 1620 Jasperson Dr	Kingsville	March 27 between 10:45 AM and 1:45 PM March 26 between 10:45 AM and 4:05 PM	April 17 April16
Essex County Nurse Practitioner Lead Clinic 273 Main St E Main Entrance, Waiting Room, Patient Assessment Rooms	Kingsville	March 26 between 11:00 AM and 1:45 PM	April 16
Queen Elizabeth Elementary School 4 Maxon Ave School building including Discovery School-based Care & EarlyON	Leamington	March 25 between 9:15 AM and 4:00 PM March 21 between 9:15 AM and 5:35 PM	April 15 April 11
Malotts Guardian Pharmacy 59 Main St E	Kingsville	March 25 between 12:30 PM and 2:40 PM March 20 between 3:20 PM and 5:40 PM	April 15 April 10
Erie Shores Family Health Team - Kingsville 59 Main Street E Main Entrance, Waiting Room, Patient Assessment Rooms	Kingsville	March 25 between 12:30 PM and 2:40 PM March 20 between 3:20 PM and 5:40 PM	April 15 April 10
Harrow Health Team 1480 Erie St S Main Entrance, Waiting Area, Patient Assessment Room	Harrow	March 24 between 10:50 AM and 1:40 PM	April 14
Advantage Drug Mart - Guardian Pharmacy 4900 Wyandotte St E, Unit 103	Windsor	March 24 between 11:30 AM and 2:00 PM	April 14
Life Labs Medical Laboratory 86 Talbot St S	Essex	March 24 between 1:30 PM and 4:45 PM	April 14
Essex Walk in Clinic 186 Talbot St S	Essex	March 24 between 1:30 PM and 4:45 PM	April 14
Pilette Medical Walk in Clinic 4900 Wyandotte St E, Unit 103 Main Entrance, Waiting Room, Patient Assessment Rooms	Windsor	March 24 between 11:30 AM and 2:00 PM	April 14
Erie Shores Family Health Team 197 Talbot Street W	Leamington	March 21 between 11:15 AM and 2:20 PM	April 11
Nature Fresh Farm Recreation Center 249 Sherk St	Leamington	March 21 between 3:00 PM and 11:30 PM March 20 between 3:00 PM and 7:00 PM March 19 between 3:00 PM and 7:00 PM March 18 between 3:00 PM and 7:00 PM	April 11 April 10 April 9 April 8
Windsor Neck and Back Care Centre 5115 Tecumseh Rd E Medical Building, Waiting Room, Patient Assessment Rooms	Windsor	March 20 between 4:00 PM and 6:30 PM	April 10
South Shore Christian Academy 134 Mill Street E	Leamington	March 19 between 8:45 AM and 11:00 AM March 18 between 9:00 AM and 11:20 AM	April 9 April 8

York Region Public Health

Exposure Location	City/Town	Exposure Dates and Times	Monitor for Symptoms Until
Best Western Parkway Hotel 600 Highway 7	Richmond Hill	March 19 between 12:00 AM and 12:00 PM	April 9
Boston Pizza 50 East Valhalla Dr	Markham	March 19 between 12:00 PM and 3:40 PM	April 9

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.

Contact the Department

Immunization and Vaccine Preventable Diseases

ivpd@oahpp.ca

Contact Laboratory Customer Service

Microbiology and Laboratory Services

customerservicecentre@oahpp.ca

Updated 17 April 2025