Why was the initiative to contain the Plague in the 1300s successful when an estimated 30-60% mortality level resulted i

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Why was the initiative to contain the Plague in the 1300s
successful when an estimated 30-60% mortality level resulted in
Europe? Could such a solution be successful for other
diseases?
What role did cats play in stopping the Bolivian Hemorrhagic
Fever epidemic? What part of the Machupo story struck you?
How did the US manage Leprosy? What is the impact of leprosy in
the modern world?
What actions from these historical outbreaks might compare to
those that have been taken worldwide to contain the COVID-19
pandemic?
Should the NIH continue to fund research in these areas?
Provide factual evidence from your readings to support your
position.