| Most American who have kept their immunizations current can travel with little problem. However, there are still risks of acquiring illness when traveling internationally. In general, these risks depend on the area of the world you are visiting and the length of your stay. Travelers to developing countries are at greater risk than those traveling in developed areas. In all cases, it is wise to review immunization records and research immunization information in the early planning stages of your trip. Some countries require yellow fever vaccination if the itinerary stops in a country that has an outbreak: even if no one leaves the plane. Additionally, some vaccinations require multiple doses and take several months to complete.
At the minimum, it is important to be certain that the tetanus/diphtheria/pertussis (Tdap) booster is current. Other areas to check include yellow fever, hepatitis, polio and malaria.
Check with your physician, the state or http://wwwnc.cdc.gov/travel/content/vaccinations.aspx before you travel.
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