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Which microorganism is responsible for causing typhoid fever, a disease transmitted via the faecal-oral route?

1. Salmonella typhi
2. Shigella
3. Escherichia coli
4. Giardia

Correct answer: Salmonella typhi

Solution

Typhoid fever is specifically caused by the bacterium Salmonella typhi, which spreads through contaminated food and water via the faecal-oral route.

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