In Ontario in 2024, 10.9% of cases had received at least one dose of vaccines. In this province so far in 2025, 8 cases have required hospitalization. 100% of those were unvaccinated. www.publichealthontario.ca/-/media/Docu... [6/8] - ThreadSky

deonandan.bsky.social • 5 days ago

In Ontario in 2024, 10.9% of cases had received at least one dose of vaccines.

In this province so far in 2025, 8 cases have required hospitalization. 100% of those were unvaccinated.

https://www.publichealthontario.ca/-/media/Documents/M/24/measles-ontario-epi-summary.pdf

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wiredwoozle.bsky.social•5 days ago

Thanks for spreading the word. 🙏

Hospitalisation numbers are significantly worse: 129 so far in 2025, including a few vaccinated. 92 children. (From p2. The number you cited was from a subset.)

deonandan.bsky.social•5 days ago

What does all this mean?

Vaccines confer EXTRAORDINARY protection, but not 100%. If you're among the few non-responders or someone with waned immunity, you likely won't know until you're exposed to measles.

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deonandan.bsky.social•5 days ago

This is why it's important for EVERYONE who can to be immunized, so that that precious few with reduced immunity never get exposed in the first place.

Thus ends my ongoing plea for everyone to get a measles shot.

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lauriewoodner.bsky.social•5 days ago

New grandma here of 7 mos. old. I haven't felt this unsettled since the meningitis outbreak in the late 90's. We lined up at mass immunization sites to get our kids vaccinated. My granddaughter can't be vaccinated but you can, please do it.

eastpole.bsky.social•5 days ago

Keep your eye on your health region -- some places with high case counts are stepping in and vaccinating kids starting at 6 months. This *is* safe and effective for the baby, but it results in immunity that won't last as long as if that first vaccine dose was given ~ 1 year of age.

eastpole.bsky.social•5 days ago

https://www.cbc.ca/news/canada/hamilton/measles-vaccine-younger-age-1.7484214

nptwrites.bsky.social•5 days ago

I was in high school during that outbreak. Kids in my city died. Astonishingly quickly from the point of symptom onset (like, within *hours*). Back then we still had a functioning public health department that marched into all the schools and vaxxed everyone asap. Should be doing that now.

nptwrites.bsky.social•5 days ago

Think it was more early-90s. I definitely remember the deaths, and the mass vaccination campaigns. But I headed off to university in the mid-90s, so it had to have been early than that.

calyps09.bsky.social•5 days ago

In the US they will vaccinate at 6 mos in high risk scenarios, with the child continuing to receive doses at normal intervals thereafter (12mos and 3-4 years).

I know our public health is currently rubbish, but this still stands as of right now.

choephora.bsky.social•4 days ago

Yes! Ask their doctor - many regions offer an early vaccination, as soon as 6 months. If my kids were that young, that’s what I would be doing.

gabituto.bsky.social•5 days ago

If people don't listen to you, it's at their own peril.

deonandan.bsky.social•5 days ago

That's what I tell my son. So far, he remains pro-peril.

peterbarabas.bsky.social•5 days ago

Also, babies before they get their vaccine are only protected by our herd immunity. Which is pretty important, because a single person with measles, walking into a hospital may get them infected as it is extremely contagious.

metoo.bsky.social•5 days ago

This protects infants, and others who can't have live vaccines and/or have reduced immunity (chemo, bone marrow transplants, immunodeficiencies and more).

karistinalafae.bsky.social•5 days ago

I just had my titers run, and my MMR is still protecting me. Which was a relief, because I'm on immunosuppressants, and I didn't want to risk getting a live vaccine again if I'd lost my immunity.

gingerchef.bsky.social•5 days ago

I’m old, so I actually HAD mumps and rubella. I still went and got an MMR last week, because of these measles outbreaks.

gapedsrn.bsky.social•5 days ago

I just had titers drawn and while Mumps and Rubella showed immunity, measles did not. Born 1966. Scheduled for MMR now as I am a pediatric nurse for medically fragile kids.

deonandan.bsky.social•5 days ago

Good thing you checked!

dalehennessey.qwertyqwert.ca•5 days ago

You, like me, may be a non-responder. My adult shot didn't take after finding out my childhood ones didn't take. Recommend you have titers done again after your MMR shot!

gapedsrn.bsky.social•5 days ago

Thanks for that. I swear I had a booster when enrolled in nursing school several decades ago. It could not remember

sansnom.bsky.social•5 days ago

https://www.merckmanuals.com/en-ca/professional/hematology-and-oncology/leukopenias/lymphocytopenia

embers1.bsky.social•4 days ago

The increase at social scale of lymphocytopenia is also a factor reducing efficacy of vaccines.
For measles, there should be two preventive measures in place: vaccination and NPIs (masking, ventilation, air filtration, de-crowding), more so as there are outbreaks now worldwide.

sansnom.bsky.social•4 days ago

Yup.

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