Which organism is the causative agent of brucellosis?

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Multiple Choice

Which organism is the causative agent of brucellosis?

Explanation:
Brucellosis is caused by Brucella species, a small Gram-negative bacterium that can live inside host cells. Humans typically acquire it through contact with infected animals or by consuming unpasteurized dairy products from those animals. The Brucella genus includes several species—such as B. melitensis, B. abortus, and B. suis—that are classic culprits in human brucellosis. The other organisms listed are linked to different diseases (plague, Q fever, and food poisoning, respectively), so they don’t explain brucellosis.

Brucellosis is caused by Brucella species, a small Gram-negative bacterium that can live inside host cells. Humans typically acquire it through contact with infected animals or by consuming unpasteurized dairy products from those animals. The Brucella genus includes several species—such as B. melitensis, B. abortus, and B. suis—that are classic culprits in human brucellosis. The other organisms listed are linked to different diseases (plague, Q fever, and food poisoning, respectively), so they don’t explain brucellosis.

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