What Was the Black Death?
9. What Caused the Black Death to End?
While the exact reason why the Black Death declined around 1351 is not known, quarantining the sick and developing more modern medical treatments are thought to have played a part, as people began to look for scientific rather than religious causes for the condition. Sailors were held on ships for up to 40 days before being able to return to land. The evolution of genetic immunity is thought to have played a role as well.
The plague did not end neatly, and several outbreaks continued to start in various parts of Europe. There were large incidents in Europe as late as 1665, and Russia and the Ottoman Empire were still battling the plague in the 1800s.
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