See preventing Creutzfeldt-Jakob disease for more information. But the average time it takes for the symptoms of variant CJD to occur after initial infection (the incubation period) is still unclear. The incubation period could be very long (more than 10 years) in some people, so those exposed to infected meat before the food controls were …
https://www.nhs.uk/conditions/creutzfeldt-jakob-disease-cjd/

