Mad Cow Disease Remains Rare Since Discovery in U.K.: Factsheet
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Mad cow disease, identified in four cases involving U.S. cattle starting in 2003, is related to an incurable condition in humans called variant Creutzfeldt-Jakob that leads to a rapid decline of mental function and movement.
The latest mad cow case, found at a California rendering plant this month, didn’t enter the food chain for humans, according to the U.S. Agriculture Department.