Typhoid fever is caused by:
APlasmodium vivax (a protozoan)
BSalmonella typhi (the bacterium)
CRhinovirus type C strain
DWuchereria bancrofti worm
Answer & Solution
Correct answer: B. Salmonella typhi (the bacterium)
Typhoid is caused by Salmonella typhi, a Gram-negative bacterium spread via contaminated food and water. It colonises the small intestine and spreads to other organs.
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