Toronto, Ontario – [April 24, 2025] – In an urgent appeal to protect the health and safety of Ontario’s students, education workers, and families, Ontario School Safety (OSS) has issued an open letter asking the Ontario Provincial Government and Public Health Ontario for an immediate vaccine-PLUS strategy, which includes the essential role of healthy indoor air, to curtail the spread of measles. This critical request comes in the wake of concerning measles infection rates – as of April 17th, 2025, Public Health Ontario is reporting 925 measles cases in the province, more than five times the number of cases than the total number of cases over the last 12 years. Encouraging a vaccine-only strategy is insufficient due to barriers to access, and because measles spreads not only through direct contact with secretions or contaminated surfaces, but through the air we breathe.
Comments closedTag: measles
Measles outbreak ends in Quebec as number of cases explodes in Ontario
The measles outbreak that began in Quebec in December has officially ended, the Ministry of Health has confirmed. The situation is quite different in Ontario, which has recorded more than 900 cases.
The spread has stabilized in Quebec in recent weeks, with the last recorded case dating back to March 18. Quebec has confirmed 40 cases of measles during this outbreak, with the vast majority (32 cases) in the Laurentians.
According to the government’s technical parameters for the management of measles cases, contacts and outbreaks in Quebec, the end of the outbreak is set at the 32nd day following the last presence of the last contagious case in an environment.
Comments closedMeasles is spreading in Ontario — here’s what you need to know
A major outbreak of measles has infected more than 800 people in Ontario. It’s the first outbreak of its size since the disease was declared eliminated in 1998.
Now, lower vaccination rates are leading to a serious outbreak in the province, enough to garner a travel advisory to the province from New York State south of the border.
Here’s what you need to know about measles — how it’s transmitted, how you can protect yourself, and whether you need to update your vaccinations.
Comments closedOntario measles case count exceeds 800 total infections, 155 new since last week
TORONTO – Ontario is reporting 155 new measles cases over the last week, pushing the province’s case count to 816 since an outbreak began in the fall.
The number of new cases has increased again after a few weeks of appearing to stabilize in the 100-per-week range, which public health physicians had taken as a sign of potential optimism.
Dr. Sarah Wilson, public health physician at Public Health Ontario, says the fact that Ontario has exceeded 800 cases is striking.
Comments closedAirborne Danger
Stuffy, crowded classrooms mean kids are breathing in viruses and pollution. Parents are trying to make the air safer, but hitting roadblocks.
In September 2023, Heather Pun started sending her son to school with a carbon dioxide monitor. He was spending his days in a stuffy portable classroom, and she worried that COVID was being passed lung-to-lung through the stale air.
The device, which reads the concentration of carbon dioxide (CO2) in the air, showed CO2 levels as high as 3,500 parts per million (ppm) in his classroom.
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Respiratory season ends, B.C. launching spring COVID-19 vaccination campaign
Respiratory illness season is over, British Columbia’s top doctor said Friday, but the province is set to launch a spring COVID-19 immunization campaign and wants everyone to ensure they’re fully protected against measles.
Provincial health officer Dr. Bonnie Henry said B.C.’s COVID-19 hospitalizations have hit the lowest level since 2020, with about 40 people in hospital, while cases of influenza and respiratory syncytial virus, or RSV, have also been declining.
Still, Henry said there have been resurgences in spring and summer in the past, and the province is focused on protecting people at the highest risk of serious illness.
Comments closedMeasles ‘inevitable’ in Ottawa, expert warns as Ontario outbreak spreads
Ottawa Public Health has begun monitoring wastewater for evidence of measles in the city as the highly infectious disease continues to surge throughout Ontario.
That makes Ottawa one of the only communities in the province and across Canada using wastewater as a possible early warning signal for measles. Ottawa Public Health says the tool is promising for detecting measles, but the research is limited and “many unknowns remain”.
There have been no cases in Ottawa so far this year but Dr. Gregory Rose, who is director of infection prevention and control at Queensway Carleton Hospital, warns that it is only a matter of time.
Comments closedAmid Canada’s largest measles outbreak in more than a decade, experts say this COVID-era tool could help
As Canada deals with its largest measles outbreak in more than a decade, health experts say a COVID-era tool could help tame the spread.
Wastewater surveillance, which involves testing sewage samples for viral pathogens, became essential during the pandemic. The data helped overwhelmed health officials map out COVID-19’s path and better predict the trajectory of cases.
At the time, it was praised as a critical public health tool that could serve as a warning system to keep Canadians safe from future harmful infections. And as the current measles outbreak surpasses 500 cases in Canada, experts say this is the moment where leaning into regional wastewater surveillance would be most helpful.
Comments closedOntario sees another sharp rise in measles cases while outbreaks grow in Quebec, Alberta
There’s been another sharp increase in Ontario measles cases as the province begins to release weekly reports on the infectious disease.
Public Health Ontario is reporting 470 measles cases since an outbreak began in October. That’s an increase of 120 cases since March 14.
The spread resulted in 34 hospitalizations, including two people who needed intensive care. Most of those hospitalized were unvaccinated kids, including one of the intensive care patients.
The outbreak expansion adds to the growing concern of rising measles cases in different parts of the country, including in Quebec where there are 40 cases and Alberta where there are 13, according to the latest data.
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BC’s Measles Vaccination Rate Is Lower Than in Gaines County, Texas
In Gaines County, Texas, where a measles outbreak has killed one six-year-old and one adult, the measles vaccination rate among kindergarteners is just 82 per cent, according to reporting by The Atlantic.
That’s a higher measles vaccination rate than children have here in B.C.
Just under 82 per cent of two-year-olds have gotten one dose of the measles, mumps and rubella, or MMR, vaccine, and around 72 per cent of seven-year-olds have gotten both doses, according to the B.C. Childhood Immunization Coverage Dashboard’s 2023 data, which is the most recent data year available.
Comments closedThe measles epidemic continues in Quebec with 30 confirmed cases now
The measles epidemic continues in Quebec. The province has reached 30 cases, according to the most recent figures from Public Health.
The Laurentides region remains the most affected with 27 cases of measles, the others being in the territories of Montreal, Laval and Montérégie.
Comments closedMeasles cases in Ontario have nearly doubled over the last 2 weeks
This is a corrected story. A previous version from The Canadian Press erroneously reported that there were 84 new measles cases reported in Ontario over the last two weeks when in fact there were 78.
Ontario is reporting 78 new measles cases over the last two weeks, nearly doubling the province’s total count since an outbreak started in the autumn.
Comments closedA Texas child who was not vaccinated has died of measles, a first for the US in a decade
LUBBOCK, Texas (AP) — A child who wasn’t vaccinated died in a measles outbreak in rural West Texas, state officials said Wednesday, the first U.S. death from the highly contagious — but preventable — respiratory disease since 2015.
The school-aged child had been hospitalized and died Tuesday night amid the widespread outbreak, Texas’ largest in nearly 30 years. Since it began last month, a rash of 124 cases has erupted across nine counties.
The Texas Department of State Health Services and Lubbock health officials confirmed the death to The Associated Press. The child wasn’t identified but was treated at Covenant Children’s Hospital in Lubbock, though the facility noted the patient didn’t live in Lubbock County.
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Four more measles cases confirmed in Norfolk County and Brant County
The Grand Erie Public Health Unit is investigating four new cases of measles.
In a news release on Thursday, the health unit said the latest cases were identified in Norfolk County and Brant County.
Two of the recently ill people are recovering in hospital while the other two are at home.
Thursday’s update brings the total number of confirmed illnesses to 57, nine of which have occurred among adults and 48 within children.
Comments closedAdditional measles case detected in B.C.‘s Lower Mainland: officials
A second case of measles linked to a group that travelled to Southeast Asia has been identified in B.C.’s Lower Mainland, according to health officials.
The infected person lives in the Vancouver Coastal Health region and was on Air Canada Flight 66, which arrived at YVR on Feb. 11, said a statement from the health authority on Wednesday. The person was travelling in the same “party” as a Fraser Health region resident in whom measles was detected over the weekend.
People who were on the flight or who were in the international arrivals area of Vancouver’s airport between 7 and 9:30 a.m. on Feb. 11 may have been exposed, the notification from health officials said.
Comments closedConfirmed case of measles in Hamilton area child: public health
The City of Hamilton says it is investigating a confirmed case of measles.
Hamilton Public Health (HPH) says the confirmed case is tied to a Hamilton area child and they are investigating several local exposures.
Comments closed11 new measles cases confirmed: Grand Erie Public Health
Another 11 cases of measles have been confirmed by Grand Erie Public Health, bringing the total cases to 48 in the Brantford/Brant, Haldimand/Norfolk area.
One person is recovering in hospital, according to a news release, and the health unit is busy trying to contact those who may have been exposed to that person but the infection source is “unknown at this time.”
The cases involve 42 children and six adults. There are another 19 cases known in the Southwestern Public Health area.
A spokesperson for the Grand Erie health agency said all but one of the cases is from the Haldimand-Norfolk area, with just one case in Brantford-Brant.
Comments closedPeople need to ‘remain vigilant’ as measles cases rise, Waterloo region’s medical officer says
Comments closedWhile international travel was the initial source of these outbreaks, all the people with recent measles infections were exposed to the virus in Canada.
The majority of measles cases reported in Canada occur among unvaccinated people, many of whom are children and include infants under the age of one who are more vulnerable and have not yet had the opportunity to be vaccinated… that is why we need to remain vigilant and I recommend that we keep up-to-date with the recommended vaccinations.