Many things can go wrong on vacation. For example, food and water contamination are common. Boiling water is by far the most reliable method to make water safe to drink. Water should be brought to a vigorous boil and allowed to cool to room temperature without adding ice. It may be advisable, however, to stick to carbonated beverages such as carbonated bottled water and soft drinks.
Food contamination is most risky in any raw foods.
Particularly in areas where hygiene and sanitation are inadequate, travelers should avoid salads, uncooked vegetables, unpasteurized milk and milk products, and undercooked meat. Malaria is also a concern for travelers. Protective measures should be taken to avoid contact with mosquitoes, such as using mosquito nets while sleeping, wearing clothes that cover most of the body and the use of insect repellent. If malaria is suspected, proper medical treatment should be sought as soon as possible. Accidents are the most common problem for travelers.