Between 1347 and 1350, a mysterious disease known as the ” Black Death ” (the bubonic plague) killed some 20 million people in Europe—30 percent of the continent’s population. It was especially deadly in cities, where it was impossible to prevent the transmission of the disease from one person to another.
The plague started in Europe in October 1347, when 12 ships from the Black Sea docked at the Sicilian port of Messina. Most sailors aboard the ships were dead, and those who were alive were covered in black boils that oozed blood and pus. Symptoms of the Black Death included fever, chills, vomiting, diarrhea, terrible aches and pains – and then death. Victims could go to bed feeling healthy and be dead by morning.
The plague killed cows, pigs, goats, chickens and even sheep, leading to a wool shortage in Europe. Understandably terrified about the mysterious disease, some people of the Middle Ages believed the plague was a divine punishment for sin. To obtain forgiveness, some people became “flagellants,” traveling Europe to put on public displays of penance that could include whipping and beating one another. Others turned on their neighbors, purging people they believed to be heretics. Thousands of Jews were murdered between 1348 and 1349, while others fled to less populated areas of Eastern Europe.
Today, scientists know the plague was caused by a bacillus called Yersina pestis, which travels through the air and can also be contracted through the bite of an infected flea or rat, both of which were common in the Middle Ages, especially on ships.
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