How was BSE spread in the United Kingdom?
It is widely accepted that BSE was spread through the farming practice of including meat and bone meal in animal feed as a source of protein. This practice has since been banned. It is thought that meat and bone meal derived from BSE-infected animals entered the food chain and infected healthy animals. The long delay between BSE infection and onset of disease symptoms meant that many animals were infected in this way before the first sick animal was discovered.
