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Typhoid

Food & waterborne bacterium

Fecal-oral route through contaminated food and water.

Risk to travelers

Moderate

Vaccine

Vi polysaccharide / oral Ty21a

Where it occurs

South/Southeast Asia (highest risk), Africa, Latin America. Risk correlates with sanitation infrastructure.

🧬Transmission

Contaminated food & water

⏱️Incubation

6–30 days (avg 1–2 wk)

📅Seasonality

Year-round

💉Vaccine

Vi polysaccharide / oral Ty21a

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