There are many symptoms of the Bubonic Plague that happen very rapidly. Some of these symptoms are as follows: abdominal pain, diarrhea, nausea and vomiting, fever and chills, extreme weakness, bleeding (blood may not be able to clot), shock,skin turning black (gangrene).
The first outbreak occurred in Messina, Sicily after the plague was found on trading ships from the Black Sea.
To try to treat the plague, the would do Rubbing onions, herbs or a chopped up snake (if available) on the boils or cutting up a pigeon and rubbing it over an infected body. Drinking vinegar, eating crushed minerals, arsenic, mercury or even ten-year-old treacle. They also did bloodletting.
After the Bubonic Plague, over one-third of the population was killed which caused the feudal manor system to collapse. Serfs were free to leave the lands of the lords to seek higher wages with the vast labor shortages.
The Bubonic Plague was a massively widespread disease that killed 50 million people. It was extremely contagous and could be spread very quickly.