
LessWrong (Curated & Popular) "Canada Lost Its Measles Elimination Status Because We Don’t Have Enough Nurses Who Speak Low German" by jenn
Jan 26, 2026
A deep look at why Canada lost measles elimination status and how outbreaks clustered in old-order Mennonite communities. Mapping and local reporting explain the unusual geographic pattern. The episode highlights language barriers in Low German as a key obstacle to vaccination access. A practical policy focus: hiring Low German–speaking health workers to improve outreach.
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Elimination Status Masked By Aggregate Coverage
- Canada lost measles elimination status after 12 months of continuous transmission driven by concentrated outbreaks.
- National coverage ignored the specific communities causing the spread, obscuring the true cause.
Local Reporting Revealed Outbreak Details
- Jen used local Waterloo coverage to trace outbreaks because the region has many Mennonites.
- Local advisories and exposure notices revealed how community spread played out in practice.
Geography Explains Concentrated Case Counts
- Ontario and Alberta had far more cases because Mennonite populations are concentrated there.
- Public health traced the Ontario outbreak to a Mennonite wedding and found most cases among unimmunised people.




