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Moose Death Highlights Brain Worm Threat in Minnesota

9/13/2025

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Story summary
  • A moose in Minnesota died after being hit by a truck, linked to a brain worm infection.
  • The brain worm, Parelaphostrongylus tenuis, affects herbivores, causing severe neurological problems.
  • White-tailed deer carry the parasite without symptoms, contaminating the environment.
  • Genetic analysis is the most reliable diagnostic method, while a new serological test detects antibodies in live animals.
  • Monitoring blood samples from deceased animals helps track the parasite's spread across North America.