Which of the following causes plague?
(a) Trichinella spiralis
(b) Salmonella typhimurum
(c) Yersinia pest is
(d) Leishmania donovani.
Ans-(c) Yersinia pestis
Explanation-
Yersinia pestis, a bacteria, causes the infectious disease plague. These bacteria are found in rodents, particularly rats and the fleas that feed on them. The animal and human usually contratct the bacteria from such rodent or a flea bite.
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