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Question

Identify the reservoir host of bubonic plague.

A
Rat
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B
Human
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C
Pig
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D
None of the above
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Solution

The correct option is A Rat
Yersinia pestis, the bacteria that causes bubonic plague, maintain their existence in a cycle involving rodents and their fleas. In urban regions or places with high rat infestations, Y. pestis cycles between rats and their fleas. Hence rats and their fleas are the reservoir host of bubonic plague. Thus the correct answer is option A.

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