Question

Question 2.

Black Death was responsible for killing around 50 million people in the middle of 14^th century. At that time, people ascribed it to god’s curse and the bad omen of Jews. Today, what do we know about the cause of plague?

Answer 1

Answer

Plague is a bacterial infection by yersina pestis , spread through infected fleas. This disease also known as black death. Because in the affected individual the lymph node become blackened and sweallon after bacteria entered through skin. This bacteria need calcium in order to grow at body temparature, because it missing and important enzyme. Bubonic plague has killed over 200 million people during the course of history.

Three forms of plagues in humans - Bubonic plague , Neumonic plague , septisemic plague.

Develop symptoms 2 to 7 days after occuring infections.

Bubonic plague mainly spread by infected fleas from small animals like rat. The bacteria enter through the skin through flea bite and travel through lymphatic vessels to a lymph nodes and causing it to sweall.

Bubonic plague first emerged in china, more than 2600 years ago.

Symptoms of Bubonic plague include

• sweallon lymph nodes in the groin, ampit, or neck, there may be tender and warm
• fever
• chills
• fatigue
• muscle pain
• head ache
• diarrhoea
• vomiting
• shock

treated with antibiotics and other supportive meassures.

Preventive meassures include

• fills holes and gaps in the home to stop rates, mice from getting in
• Clean up your yard
• wear gloves if you touch wild animals , alive or dead,​​​​​​​

last u.s case of plague epidemic occured in los angeles , in 1920 s.

plague estimated to have killed 30 to 60 % of europe's population. it was painful relsatively quick death that involveds vomiting , bleeding , gangrene of skin , death. todays antibiotics can kill this bacteria. bubonic plague not transmitted from human to humans.