Final answer:
The excerpt indicates that governmental regulations eventually curbed the spread of mad cow disease but also suggests there was public dissatisfaction due to the delayed action in implementing these measures.
Step-by-step explanation:
The main idea of the excerpt is that the government interventions, such as bans on certain cattle feed, helped bring an end to the spread of mad cow disease, but there was public discontent about the governments’ delayed actions. Bovine Spongiform Encephalopathy (BSE), commonly known as mad cow disease, was caused by cattle consuming feed contaminated with infected nervous tissue, leading to a fatal neurodegenerative condition characterized by misfolded proteins called prions.
The realization that BSE could be transmitted to humans in the form of variant Creutzfeldt-Jakob disease (CJD) through the consumption of infected beef triggered international bans on such imports and highlighted the need for rigorous disease control measures.