A) Xenopey cheopis
B) Anopheles mosquito
C) Bacillus pestis
D) Pediculus humanus
Correct Answer: A
Solution :
Plague is essentially a disease of the rats, and is one of natural methods of periodically reducing the rat population. Man is affected incidentally. The disease is caused by a rod-shaped, non-motile Bacillus, Pasteurella pestis. It is carried from rat to rat fleas, chiefly, Xenopsylla cheopis. The disease is characterized by high fever, prostration and painful bubo of lymph nodes.
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