Answer:
The main idea of this excerpt is Mad cow disease ended because of government bans on feeding cows certain foods, but people were angry that governments did not act sooner.
Explanation:
The disease was first detected in 1986 but it was until 1997 that governments began to ban farmers from feeding their livestock high-risk meat, in the year 2010 the disease had largely disappeared. but a lot of people were killed by it.