Quebec, Canada: 2024-2026 Measles

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Source: https://montreal.citynews.ca/2025/03...care-settings/

Most of Quebec’s 36 measles cases contracted in health-care settings
By The Canadian Press
Posted March 12, 2025 12:25 pm.

The number of measles cases continues to rise in Quebec.

A total of 36 cases have been confirmed, including 28 in the Laurentians. In addition to the Montreal, Laval, and Montérégie regions, which are affected by outbreaks, the Eastern Townships was recently added to the list.

The current measles epidemic began in December 2024. The Quebec government’s website, which lists the locations and dates of possible exposure to a measles case, indicates that most cases were contracted in health-care facilities and pharmacies. There are also several cases in schools and daycares...

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March 28, 2025

Three questions about the measles outbreak

Professor Eve Dubé analyzes the causes of the current measles outbreak and the solutions that should be put forward to curb it.

Typically, Quebec records between 0 and 4 cases of measles per year. Between February and June 2024, 51 cases were reported. Since December 2024, a new outbreak has been underway, and as of March 26, 40 cases had been reported. Eve Dubé , a professor in the Department of Anthropology at Laval University and a specialist in health anthropology, analyzes the phenomenon.

Are recent measles outbreaks due to decreased vaccine effectiveness or under-vaccination against the disease?

The increase in cases is not linked to a decrease in vaccine effectiveness. It is estimated that one dose protects between 85% and 95% of children, and two doses, 100%. The measles vaccine is therefore very effective, and the increase in cases is linked to a decrease in vaccination rates. Measles is an extremely contagious disease. At least 95% of the population must be vaccinated to develop herd immunity. In Quebec, in 2021, it was estimated that 92% of one-year-olds and 89% of two-year-olds were vaccinated against measles. Local variations in vaccination rates can lead to outbreaks, for example, if several unvaccinated people live in the same community. Finally, elsewhere in the world, measles vaccination rates can be much lower, and viruses can also travel!

What factors are responsible for the decline in measles vaccination coverage?

There are generally two main causes: problems accessing vaccination services and acceptability issues. When it comes to access, we think of factors such as difficulty accessing health care. This is the case, for example, for people without a family doctor or those who do not have regular health checkups. Not knowing that a vaccine is necessary can also be a barrier. In Quebec, the first dose of the measles vaccine is given when the child is 12 months old. Many parents have then returned to work and may forget the appointment or not know it is necessary. Finally, lockdowns during the pandemic may have had a negative impact on vaccination. Despite catch-up efforts, it is possible that some people could not be reached. When it comes to acceptability, we are talking about fears about the safety or effectiveness of the vaccine, negative attitudes about vaccination in general, and the negative influence of misinformation. The measles vaccine has been associated with a persistent myth since the late 1990s, when a fraudulent study alleged it could cause autism. Although this study has been debunked, fears persist among some parents.

How can we encourage measles vaccination?

It is essential to provide simple and easy access to vaccination, including walk-in vaccination clinics, evening or weekend clinics, or mass clinics. Parents must also be reminded of the importance of measles vaccination by informing them through schools, pharmacies, etc. For parents who may have more fears, a proven strategy is to be able to speak with a vaccination counselor or a health professional trained in motivational interviewing. There is no one-size-fits-all solution. Interventions that aim to inform people, easily offer them the vaccine, and address their fears are useful. With the number of measles cases increasing worldwide, it is even more essential to ensure that all measures are taken to increase vaccination rates.

Interview by Jean Hamann

https://nouvelles.ulaval.ca/2025/03/28/trois-questions-sur-l'eclosion-de-rougeole-9ae4e43e-48e8-4cab-b47e-3a63e204e59b

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Measles outbreak

In December 2024, a new measles outbreak was declared. This outbreak is still ongoing.

As of 8:25 a.m. on April 9, 2025, 40 confirmed cases of measles reported since mid-December 2024:

• Laurentians: 32
• Montreal: less than 5
• Laval: less than 5
• Montérégie: less than 5
• Estrie: less than 5

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• Places and dates of possible exposure to a case of measles

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https://www.quebec.ca/sante/problemes-de-sante/a-z/rougeole/eclosion-de-rougeole

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Source: https://www.cbc.ca/news/canada/ottaw...524862?cmp=rss

Possible measles exposure at Gatineau farm
Those who visited Éco des champs farm on April 20 are advised to monitor for symptoms
CBC News · Posted: May 02, 2025 11:26 AM EDT | Last Updated: 2 hours ago

Anyone who visited a farm in Gatineau, Que., two weekends ago may have been exposed to measles, as an adult and child diagnosed with the contagious infection visited the animal park on April 20.

According to the public health department of the Centre intégré de santé et de services sociaux de l'Outaouais, members of the public may have been exposed to measles if they visited the Éco des champs farm at 482 Eardley Road in Gatineau, Que., on April 20 between 10 a.m. and 1 p.m.

The department recommended anyone who attended the farm at that time monitor for symptoms of measles until May 11 and check if they and their children are protected against measles...

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Source: https://montreal.citynews.ca/2025/05...rkey-montreal/

Measles case confirmed on board plane from Turkey to Montreal
By News Staff
Posted May 14, 2025 10:54 am.

Public Health officials at the Ministère de la Santé et des Services sociaux (MSSS) are informing the public that a person with measles was on board a flight to Montreal from Istanbul, Turkey last week.

This flight, Turkish Airlines flight TK35, landed at Montreal-Trudeau International Airport at 5:37 p.m. on May 7.

People on this flight and at the airport in the arrivals, customs, and baggage areas between 5:45 p.m. and 9:00 p.m. that day may have been exposed to measles, the MSSS explained in a news release...

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Source: https://montreal.citynews.ca/2025/05...ports-measles/

Montreal Public Health reports a case of measles
By Quentin Dufranne, The Canadian Press
Posted May 18, 2025 4:43 pm.
Last Updated May 18, 2025 4:52 pm.

A person in the midst of a contagious measles outbreak reportedly stayed in Montreal from May 4 to 7 and visited several places in the city, according to the Montreal Regional Public Health Department (DRSP).

According to the notice issued Friday by the DRSP, the person visited four businesses, a hotel and a private residence for seniors (RPA) during their stay in Montreal.

They reportedly stayed at the Quality Inn Dorval and visited the Château Pierrefonds residential care home. The list of places frequented by the person infected with measles also includes Boulangerie Non Solo Pane, Tacos Frida, Bar Messorem, and the Subway restaurant on Saint-Charles Boulevard in Kirkland...

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Source: https://montreal.citynews.ca/2025/12...c-first-april/

St-Eustache measles case is first reported in Quebec since April
By The Canadian Press
Posted December 4, 2025 2:12 pm.

Quebec is reporting a new case of measles in the Montreal area, the first in the province since April.

The case involves a person who visited a pediatric clinic in St-Eustache, Que., an off-island suburb of Montreal, on Nov. 28.

The government says more cases are possible and vaccination is the best protection against the highly contagious illness.

Quebec had an outbreak of measles between December 2024 and April 2025, with 36 cases reported so far this year, not counting the latest case...

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Source: https://www.ctvnews.ca/montreal/arti...iatric-centre/

New measles outbreak at Saint-Eustache pediatric centre
By The Canadian Press and Katrine Desautels
Published: December 15, 2025 at 2:11PM EST

After months without a wave of transmission in Quebec, measles has resurfaced at a pediatric centre in Saint-Eustache.

Three measles cases have so far been reported in connection with this new outbreak...

...The current outbreak was reported at the UP pediatric emergency centre in Saint-Eustache. People who were at the site between 3:30 p.m. and 8:10 p.m. on Nov. 28 may have been exposed to measles.

Public health officials are asking those who may have been exposed to monitor for symptoms until Dec. 19...

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Translation Google

Measles outbreak

An outbreak is underway.

Check the exposure locations below and follow the instructions that follow.

Vaccination is the best way to protect yourself against measles.

It is important to check if you are considered immune to this disease and to book a vaccination appointment if needed.

A new measles outbreak is underway in Quebec. The last outbreak occurred from December 2024 to April 19, 2025.

As of December 16, 2025 at 9:00 AM, 5 confirmed cases of measles have been reported in connection with the ongoing outbreak.

Since measles is circulating in Canada and internationally, other sporadic cases are still possible.

Vaccination is the best way to protect yourself against measles. Before making an appointment for a measles vaccination, check if you are considered immune to measles .

If you have been exposed to measles, follow the steps to take for people who have been exposed .

People not protected against measles who have been in contact with a case of measles or who were in the places and on the dates of possible exposure to a case of measles must self-isolate.

For each case of measles reported in Quebec, a public health investigation is conducted to determine the origin of the infection and to identify people at risk of having been exposed to the measles virus.

Preventive intervention with people exposed to the measles virus can help limit the spread of the disease.

On this page:

• Locations and dates of possible exposure to a case of measles
• Other Canadian provinces
• Epidemiology
• People at risk
• Persons considered to be protected
• People considered unprotected
• Measures to be taken for exposed individuals
• Learn more about measles

Locations and dates of possible exposure to a case of measles

This disease, which can be serious, is highly contagious. Some locations frequented by recent measles cases have been identified. People who were in the following locations during the dates and times indicated are considered contacts of a confirmed measles case. They must self-isolate if they are not protected against measles. See the "What to do" section for more information.

It is recommended to check these tables regularly, as the information may change based on survey results. If you have visited a setting listed below but that setting no longer appears on the list a few days later, you are no longer considered a contact of a confirmed measles case.
This table is updated every working day and outside of working days when new exposure media are added.


Exhibition venues updated: December 15, 2025, 5:00 PM


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https://www.quebec.ca/sante/problemes-de-sante/a-z/rougeole/eclosion-de-rougeole

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Source: https://montreal.citynews.ca/2025/12...eak-in-quebec/

Two new cases in measles outbreak in St-Eustache
By Katrine Desautels, The Canadian Press
Posted December 16, 2025 1:22 pm.

Last Updated December 16, 2025 1:41 pm.

A new measles outbreak has been declared in Quebec, and two more cases have just been confirmed, bringing the total to five cases linked to this outbreak, which occurred at a pediatric center in Saint-Eustache.

People who visited the UP pediatric emergency center in Saint-Eustache on Nov. 28 between 3:30 p.m. and 8:10 p.m. are asked to monitor their symptoms until December 19, as they may have been exposed to measles...

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Source: https://www.cbc.ca/news/canada/montr...ebec-9.7020963

Montreal hospitals flagged as sites for possible measles exposure as cases climb
Officials flag new exposure sites and say six cases have been confirmed
CBC News · Posted: Dec 18, 2025 10:50 AM EST | Last Updated: 2 hours agoA measles outbreak in Quebec has grown and cases are now being linked to locations in Montreal.

As of Dec. 17, public health officials in Quebec have confirmed six cases of measles in Quebec, primarily in the Lanaudière region, the Laurentians and Laval.

But public health officials now say people may have been exposed in Montreal.

They list a youth clinic in Pierrefonds-Roxboro, and the emergency rooms of both Sainte-Justine Hospital and the Maisonneuve-Rosemont Hospital as possible exposure locations.

They also list a Walmart Supercentre in the Saint-Leonard neighbourhood and an Adonis grocery store in Anjou as places where an infected person visited.

For the full list of exposure locations, along with dates and times of exposure, see the Quebec government website here...

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Public notice – Possible contact with measles in several Montreal communities



Date
December 18, 2025

Target audience(s)
Population , Professionals and Partners
Theme(s)

Infectious diseases

• Confirmed case of measles
• Exhibition locations, dates and times
• Recommendations
• What is measles?
• English

Confirmed case of measles

A measles outbreak is underway in several regions of Quebec. A case of measles in a person living in Montreal was reported to the Montreal Regional Public Health Department on December 17, 2025. The individual visited certain settings while contagious.

People with measles who lived outside of Montreal also visited Montreal settings while they were contagious.

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Exhibition locations, dates and times

People who visited the following locations during the indicated days and times may have been exposed to the measles virus:
The list of all locations exposed by a case of measles is available on the website:Quebec.ca. 

https://santepubliquemontreal.ca/actualite/avis-la-population-contact-possible-avec-la-rougeole-dans-plusieurs-milieux-montrealais

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Source: https://www.cbc.ca/news/canada/montr...sure-9.7024507

Measles outbreak grows to 8 cases in Quebec
2 confirmed cases at Montreal pediatric hospital, says doctor
CBC News · Posted: Dec 21, 2025 1:15 PM EST | Last Updated: 1 hour ago

The number of measles cases in Quebec is growing as an outbreak is underway.

On the morning of Dec. 19, eight cases were confirmed in the Lanaudière region, the Laurentians, Laval, Que., and Montreal, according to the provincial government.

On Sunday morning, Dr. Antonio D'Angelo, the head of the pediatric emergency department at CHU Sainte-Justine, told Radio-Canada there had been two confirmed cases at his Montreal hospital over the past week.

''We are expecting more cases," Dr. D'Angelo said...

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Measles Exposure Notice

January 5, 2026

For the attention of patients and their families

If you spent time in the pediatric emergency department (Glen B block, level S1) at the Montreal Children’s Hospital (MCH) on January 1 between 12:18 p.m. and 11:01 p.m. , you may have been exposed to measles.

Measles is a highly contagious viral infection that is transmitted through the air. It can be prevented by receiving two doses of the measles vaccine.
Possible symptoms include fever, cough, runny nose, conjunctivitis (red eyes), and a widespread rash.

If you are considered immune to measles, no action is required. You are considered immune if:

• You have received two doses of the measles vaccine (if you were born in 1970 or later)

OR

• You have not received any doses of the vaccine, but:
  • You were born before 1970
  • A serological test demonstrates the presence of antibodies against measles.
  • A medical certificate confirms the acquisition of measles before January 1, 1996.
  • Diagnostic evidence confirms a previous infection (e.g., serology).

If you are not immune:

• Please contact your healthcare provider or call Info-Santé at 811.
• You could develop measles during the incubation period, which is between January 6 and January 22.
• During the incubation period:
  • Monitor for the appearance of any of the symptoms mentioned above.
  • Inform healthcare professionals, before any medical appointment, that you may have been exposed to measles.
  • Inform the daycare or school that you may have been exposed to measles.
  • Avoid all contact with people at risk of developing a severe form of the disease:
    • People with weakened immune systems; children under one year old
    • Pregnant women

Thank you for your cooperation.
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https://hopitaldemontrealpourenfants...a-la-rougeole/

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Source: https://montreal.citynews.ca/2026/01...sles-exposure/

Montreal Children’s Hospital warns of measles exposure
By News Staff
Posted January 6, 2026 4:55 pm.

The Montreal Children’s Hospital (MCH) is warning of a measles exposure.

The hospital says people who were in the pediatric emergency room (Glen B block, level S1) on New Year’s Day between 12:18 p.m. and 11:01 p.m. may have been exposed.

The highly contagious virus can spread through the air, the MCH says.

Quebec previously confirmed measles cases linked to a pediatric medical centre in St-Eustache...