The Black Death came in three forms, the bubonic, pneumonic, and septicemic. Each different form of plague killed people in a vicious way. All forms were caused by a bacterium called Yersinia pestis.

     The bubonic plague was the most commonly seen form of the Black Death. The mortality rate was 30-75%. The symptoms were enlarged and inflamed lymph nodes (around arm pits, neck and groin). The term 'bubonic' refers to the characteristic bubo or enlarged lymphatic gland. Victims were subject to headaches, nausea, aching joints, fever of 101-105 degrees, vomiting, and a general feeling of illness. Symptoms took from 1-7 days to appear.

      The pneumonic plague was the second most commonly seen form of the Black Death. The pneumonic and the septicemic plague were probably seen less then the bubonic plague because the victims often died before they could reach other places (this was caused by the inefficiency of transportation). The mortality rate for the pneumonic plague was 90-95% (if treated today the mortality rate would be 5-10%). The pneumonic plague infected the lungs. Symptoms included slimy sputum tinted with blood. Sputum is saliva mixed with mucus exerted from the respiratory system. As the disease progressed, the sputum became free flowing and bright red. Symptoms took 1-7 days to appear.

      The septicemic plague was the most rare form of all. The mortality was close to 100% (even today there is no treatment). Symptoms were a high fever and skin turning deep shades of purple due to DIC (disseminated intravascular coagulation). According to Dr. Matt Luther, Vanderbilt University Medical Center "The plague often caused DIC in severe forms, and DIC can be fatal. The picture above demonstrates what DIC can look like. In its most deadly form DIC can cause a victims skin to turn dark purple. The black death got its name from the deep purple, almost black discoloration." Victims usually died the same day symptoms appeared. In some cities, as many as 800 people died every day.