Hidden Parasite Spreads to Washington - Summary - MDSpire
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Hidden Parasite Spreads to Washington

Findings in coyotes signal new challenges for diagnostics and surveillance

  • April 16, 2026

  • 2 min

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A recent study in Washington State has identified Echinococcus multilocularis, a zoonotic tapeworm, in coyotes, marking its first detection in wild hosts on the west coast of the U.S. This finding suggests the parasite may be established in the area, highlighting the need for better monitoring. The study involved testing 100 coyotes, revealing a 37% infection rate. Results indicate that direct intestinal samples are more effective than fecal tests in detecting the parasite, leading to the development of a new sequencing-based detection method. The findings stress enhanced awareness and surveillance to manage the risk of alveolar echinococcosis in humans.

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Hidden Parasite Spreads to Washington

  • April 16, 2026

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