Question

Which among the following bacteria caused the bubonic plague?

• A. $Yersinia$ $pestis$
• B. $Shigella$
• C. $Salmonella$
• D. $Campylobacter$

Answer 1

The correct option is A $Yersinia$ $pestis$

In 1000AD, a bacteria called $Yersinia$ $pestis$ caused the bubonic plague. It was transmitted by an infected flea. Infected people showed common symptoms like buboes, chills, nausea, fever, seizures, etc. It affected the lymphatic system. The lymph nodes turned black and swell post infection. This is why, this disease was termed black dealth. As the causative reasons were unknown and there was a lag in the treatment and became a global epidemic. It caused a huge dip in the world population.