However, water supplies including ice cubes and water used to brush teeth in remote areas or developing and third world countries should be avoided. If not available, drinking water should be boiled for five minutes prior to consumption. Chlorine and iodine tablets may also be used to purify water and are usually available at outdoor equipment or sporting goods stores. Water filters are not recommended because they do not prevent contamination with viruses which are too small to be extracted by the filtering process. In general, hot tea, coffee, carbonated beverages and fresh fruit juices are considered safe.
Many travelers make tropical areas their destination.
Such areas are associated with intense sun exposure, ultraviolet radiation and dry conditions. Because of this, travelers should use sunscreens with at least SPF 15 or above. Infants and the elderly are particularly at risk and should be adequately protected. Sunglasses should also be worn to protect the eyes. Excessive or prolonged exposure to infants can be toxic.