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

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and will be updated regularly, as the information may change as new cases are identified and current exposures become out of date.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 22, 2025

Chatham Kent Public Health

Exposure Location

City/Town

Exposure Dates and Times

Monitor for Symptoms Until

No Frills Tilbury
59 Mill St E

Tilbury

April 14 between 5:30 PM and 8:30 PM

May 5

Dollarama – Thames-Lea Plaza
603 Grand Ave W

Chatham

April 12 between 6:00 PM and 9:00 PM

May 3

Foodland
15 Queen St S

Tilbury

April 12 between 6:45 AM and 6:00 PM

April 8 between 6:45 AM and 6:00 PM

May 3

April 29

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

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

May 1

April 29

 

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

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

Stratford General Hospital
46 General Hospital Dr
Emergency Department Waiting Room

Stratford

April 17 between 4:15 PM and 7:40 PM

April 11 between 2:20 PM and 4:30 PM

April 5 between 10:30 AM and 1:30 PM

March 28 between 11:10 AM and 1:10 PM

May 8

May 2

April 26

April 18

Canada Post 
26 Main St. N

Milverton

April 5, 2025, to April 13, 2025

May 4

Milverton Mini Mart
5 Main St. S

Milverton

April 11 between 10:00 AM and 1:00 PM

May 2

Knollcrest Lodge Long-Term Care Home
50 William St

Milverton

April 10 between 2:45 PM and 11:30 PM

April 9 between 6:00 AM and 4:30 PM

May 1

April 30

LCBO
69 Main St. S

Milverton

April 10 between 10:00 AM and 1:00 PM

May 1

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

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

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

 

April 29

 

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

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

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

April 21

April 15

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

April 16

 

April 16

April 15

Woodstock Hospital
310 Julianna Dr
Emergency Department

Woodstock

March 26 between 2:33 PM and 4:43 PM

April 16

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

Region of Waterloo Public Health

Exposure Location

City/Town

Exposure Dates and Times

Monitor for Symptoms Until

WRHN @ Midtown (formerly Grand River Hospital, KW Campus)
835 King St W

Kitchener

Between April 14 at 6:30 PM and 3:00 AM on April 15

May 6

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

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

April 17 between 7:30 AM and 10:45 AM (Main Building Lobby, Lobby Elevators, First Floor Elevators, 3rd Floor Outpatients)

April 9 between 7:00 PM and 10:30 PM (Emergency Department, 3rd floor Pediatrics)

May 8

 

April 30

Our Lady of the Annunciation Catholic Elementary School
7343 Tecumseh Rd
Entire School

Stoney Point

April 15 between 9:15 AM and 5:35 PM

May 6

Margaret D Bennie Public School
259 Sherk St
Entire School (including Latchkey, EarlyON, and Talk 2 Me Program)

Leamington

April 14 between 9:15 AM and 4:50 PM

April 11 between 9:15 AM and 4:50 PM

May 5

May 2

Real Canadian Superstore Talbot Street
201 Talbot St E
Entire Building

Leamington

April 11 between 6:00 AM and 4:30 PM

April 10 between 6:00 AM and 4:30 PM

April 2 between 4:30 PM and 8:00 PM

May 2

May 1

April 23

St. Louis Catholic Elementary School
176 Talbot St E
Entire Building

Windsor

April 10 between 9:15 AM and 5:35 PM

April 9 between 9:15 AM and 5:35 PM

April 8 between 9:15 AM and 5:35 PM

April 7 between 9:15 AM and 5:35 PM

April 4 between 9:15 AM and 5:35 PM

April 3 between 9:15 AM and 5:35 PM

May 1

April 30

April 29

April 28

April 25

April 24

Jackson Park Health Centre
2475 McDougall St
Entire Building

Windsor

April 10 between 5:50 PM and 9:20 PM

April 8 between 7:00 PM and 9:15 PM

May 1

April 29

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)

 

April 28


April 25


April 16


April 13

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 (Waiting rooms and Patient Assessment Rooms)

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

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

 

April 15

 

Malotts Guardian Pharmacy
59 Main St E

Kingsville

March 25 between 12:30 PM and 2:40 PM

April 15

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

April 15

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

Wellington-Dufferin-Guelph Public Health

Exposure Location

City/Town

Exposure Dates and Times

Monitor for Symptoms Until

FreshCo – Fergus
875 St David St N

Fergus

April 4 between 7:30 PM and 10:15 PM

April 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 22 April 2025