Poliomyelitis does not occur, although precautions should be taken against typhoid fevers.
Bottled water is available and is advised for the first few weeks of the stay.
Milk is pasteurised and dairy products are safe for consumption. Local meat, poultry, seafood, fruit and vegetables are generally considered safe to eat. There is, however, a risk of biointoxication from raw or cooked fish or shellfish. Dengue fever can occur in epidemics. There is one civilian hospital, the Guam Memorial Hospital, and a number of private clinics, as well as some medical facilities run for US military personnel.