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Human Health And Disease

Question
CBSEENBI12047409
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Which one of the following is a causative agent of plague?

  • Shigella flexner

  • Bordetella pertussi

  • Staphylococcus aureus

  • Yersinia pestis

Solution

D.

Yersinia pestis

Plague is bacterial disease caused by Yersinia pestis. It is a Gram-negative, rod-shaped, cocco bacillus, facultative anaerobic bacterium that can infect humans as well as animals. It is transmitted from rodents to humans by the bite of infected fleas.

Shigella flexneri causes Shigellosis. It is a diarrheal disease caused by a group of bacteria called Shigella. It is a Gram- negative facultatively intracellular pathogen responsible for bacillary dysentary.

Bordetella pertussis causes Whooping cough. It is a Gram negative, aerobic, pathogenic.

Staphylococcus aureus can cause range of diseases such as, skin infections, pneumonia, meningitis etc. It is a Gram positive, round shaped bacterium.

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