In Elizabethan times there were many diseases. Including cholera, typhus, the deadly black plague, and many more.
One of histories most deadly killers, cholera, was caused by mostly by bad sanitation. When someone swallowed food or water contaminated by the feces of the victim, the become infected. Any contact with bathroom, clothing, or bedding that was used by the victim is also another way to become infected. Symptoms include extreme diarrhea, sharp muscle cramps, and fever and vomiting. Cholera is rapid acting and death occurs 12-48 hours of infection. Cholera had no medicines to cure it. And in the 19th cholera became the first global disease in a series of epidemics.
The typhus fever was another disease caused by bad sanitation. This disease was transmitted through the lice that live off humans. It was a highly contagious disease that earned nicknames like "jail fever" and "ship fever" because it was most common among men in a secluded area.
Dysentery left it's mark in history due to it's painful diarrhea. This disease was often referred to as an army's "Fifth Column" It came in many forms and was a cause in the extinction of the Crusaders.
The most feared killer disease of all is known as the plague or black death. The plague was spread by bites of fleas. The plague infected rodents and humans mostly and was spread through one another. The black death was responsible for killing more than half the population of England. Many of the survivors were slaves that worked in stables. The reason most of them survived is because the fleas could not stand the smell of horses and since people bathed once a month; they carried the smell with them everywhere. But unfortunately people didn't know this and many died. Symptoms developed...