Question

Plague is caused by 

(a) bacteria

(b) Protozoa 

(c) virus  

(d) All of these

Answer 1

(a) bacteria

Plague is an infectious disease that affects animals and humans. It is caused by the bacterium Yersinia pestis. This bacterium is found in rodents and their fleas and occurs in many areas of the world, including the United States. Y. pestis is easily destroyed by sunlight and drying.

Answer 2

(a) bacteria

 Plague or black death is caused by bacterium Yersinia pestis and spread by bite of rodent flea.

Answer 3

A) BACTERIA 

Plague is an infectious disease that affects animals and humans. It is caused by the bacterium Yersinia pestis. This bacterium is found in rodents and their fleas and occurs in many areas of the world, including the United States.