Event Brief
Parasite Ceratonova shasta kills Chinook salmon in Klamath
Filed: Jun 22, 2026 at 2:06 PM ET
Summary: Ceratonova shasta is causing severe infections and deaths among Chinook salmon in the Klamath River.
WHO: Sascha Hallett, Oregon State University
WHAT: Hallett said fish reactions to the parasite have been unusually severe, with mature parasites detected in sick and dead Chinook salmon.
WHEN: Jun 22, 2026 at 12:09 PM ET
WHERE: Klamath River, California and Oregon
WHY: Chinook salmon are infected with the parasite Ceratonova shasta, leading to severe disease and premature death, with mature parasites detected in dead and sick fish.
ℹ️ This event is analyzed using pattern arcs, velocity indicators, and source analysis in our MI Console.
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