You can become a victim of typhoid while traveling in Third World countries in Asia and Africa. Drinking water from the local supply in these countries will also cause typhoid as the water is often contaminated with sewage. Stick to bottled water. Consuming uncooked vegetables in salads or eating unpeeled fruits is yet another way by which typhoid spreads. Eat the local food from the street kiosks and you are inviting an attack by the S typhi bacteria. Not observing extra hygiene precautions like regularly washing your hands can cause typhoid to spread. Wash with soap and water or use a hand sanitizer.