Tracing the virus: How measles made its way back to Canada episode artwork

EPISODE · Sep 24, 2025 · 25 MIN

Tracing the virus: How measles made its way back to Canada

from The Decibel · host The Globe and Mail

Measles is one of the most contagious respiratory viruses in the world. But for decades, it rarely infected Canadians. That’s not true any more. Since October, 2024, North America has seen record case numbers — and most of them seem to lead back to one Canadian family.Today, The Globe’s international correspondent Nathan Vanderklippe joins the show. He’ll tell us the story of his 40,000-kilometre journey to trace the measles outbreak and to figure out how it took hold in North America after Canada eliminated it 27 years ago. He’ll explain why this spread has been so hard to contain and what tracing its spread can teach us about preventing and preparing for future outbreaks.Questions? Comments? Ideas? Email us at [email protected] Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Measles is one of the most contagious respiratory viruses in the world. But for decades, it rarely infected Canadians. That’s not true any more. Since October, 2024, North America has seen record case numbers — and most of them seem to lead back to one Canadian family. Today, The Globe’s international correspondent Nathan Vanderklippe joins the show. He’ll tell us the story of his 40,000-kilometre journey to trace the measles outbreak and to figure out how it took hold in North America after Canada eliminated it 27 years ago. He’ll explain why this spread has been so hard to contain and what tracing its spread can teach us about preventing and preparing for future outbreaks.

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Tracing the virus: How measles made its way back to Canada

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This episode was published on September 24, 2025.

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Measles is one of the most contagious respiratory viruses in the world. But for decades, it rarely infected Canadians. That’s not true any more. Since October, 2024, North America has seen record case numbers — and most of them seem to lead back to...

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