Poisoning Outbreak: Aconite Poisoning at Markham, Ontario Restaurant episode artwork

EPISODE · Jul 10, 2025 · 7 MIN

Poisoning Outbreak: Aconite Poisoning at Markham, Ontario Restaurant

from The Poison Lab

A Morel DilemmaSupport the showReview the show where ever your listeningGet Messages from Toxo (Join the Newsletter!)Join as a supporting memberAd free episodesBonus content and early accessDiscounts and give aways on GOTA PICCEM Mushroom card gameThe GOTTA PICCEM Poisonous Mushroom Game!The Poisonus Fungus Amongus Children's Book!Full book reading (6 minutes!)Tox trinkets (Rep the show at home!)Reach the showEmail: [email protected] Show ResourcesRyan's Medical Games and ResourcesShow WebsiteThe Poison Lab: Outbreak – Markham Aconite PoisoningOn August 29, 2022, twelve diners at a Markham, Ontario restaurant fell critically ill with vomiting, numbness, and life-threatening arrhythmias. The culprit? A deadly plant toxin: aconite.In this episode—the first of a new Poison Lab Outbreak series—we go inside the Markham mass poisoning case. Join host Ryan Feldman, clinical toxicologist and emergency medicine pharmacist, as he investigates how a rare and lethal toxin ended up in a restaurant spice jar and nearly cost lives.You’ll hear firsthand from the experts who responded to the outbreak:Dr. Jessica Kent, toxicology fellow at the time at the University of TorontoDr. Abinhay Sathya, intensivist at Markham Stouffville HospitalDr. Margaret Thompson, toxicologist and on-call consultant for the Ontario Poison CentreDr. Randy Purves, research scientist at the Canadian Food Inspection Agency (CFIA)Bryn Shurmer, MS- analytical chemist at the Canadian Food Inspection Agency (CFIA)Together, they walk us through the outbreak timeline—from the first patients in VT to the public health investigation that uncovered a mislabeled spice bag full of pure aconite root.Looking for timestamps?A fully timestamped version of the episode—so you can jump to any topic—is available to our supporting members.💡 Key topics:Clinical presentation and toxic effects of aconiteChallenges in mass poisoning recognition and coordinationThe crucial role of poison centers in outbreak responsePublic health trace-back to contaminated galangal powderLessons for emergency departments and toxicologists📍 Resources & Mentions:Case series about the incident written by Dr. Kent, Sathya, and ThompsonTwitter/X post by Dr. David Juurlink that helped disseminate early infoThe Poison Lab previous aconite episode: Open and shut (Mystery Case #31)Paper written by Ryan, Dan McCabe, and Crissy Lawson🎧 Listen now at: www.ThePoisonLab.com💬 Have thoughts or questions? Connect on Instagram @tox_talk, Twitter @LabPoison, or email [email protected].

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Poisoning Outbreak: Aconite Poisoning at Markham, Ontario Restaurant

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This episode was published on July 10, 2025.

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A Morel DilemmaSupport the showReview the show where ever your listeningGet Messages from Toxo (Join the Newsletter!)Join as a supporting memberAd free episodesBonus content and early accessDiscounts and give aways on GOTA PICCEM Mushroom card...

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