The Plague

In the 14th century, black death caused extensive mortality in Eastern Europe and Western Europe. Black death sometimes plays an important role in shaping European life in the coming years as well as devastating human life. There are three forms of black death: alveolus, pneumonia, septicemia. Each form kills people in their own malicious way. All forms are caused by bacteria called Yersinia pestis. The most common form is the gland plague.

The three types of plague are the result of the infection route. Bubonic plague, septic plague, and pulmonary plague. Pest is spread mainly by fleas infected with small animals. It can also be caused by exposure to bodily fluids from plague-infected animals. In the acinar plague, the bacteria bite into the skin through the flea, enter the lymph nodes through the lymph duct, and inflate them. Diagnosis by finding blood, sputum or liquid bacteria from lymph nodes

Pest is the most common form of plague and is caused by infected fleas. Y. musis enters from a bite and reaches the nearest lymph node through the lymphatic system where it replicates. Lymph nodes then develop inflammation, become nervous, accompanied by pain, and are called "inguinal lymphadenitis". At the late stage of infection, inflamed lymph nodes may become open pus filled with pus. The plague spread among people is rare. Although plague may progress and spread to the lungs, this is a more serious type of plague called pneumonia plague.

The general form of plague is the most common form of plague. It usually occurs after infected flea bites. The main feature of the glandular plague is swollen, painful lymph nodes, usually in the groin, armpits, or neck. Other symptoms include fever, chills, headaches and extreme fatigue. People usually suffer from plague 1 to 6 days after infection. Failure to treat early may spread bacteria to other parts of the body, causing sepsis or pulmonary plague.