For those traveling to high-risk areas, vaccines are now available. The vaccine is usually not recommended in the U.S. There are two forms of the vaccine available an oral and an injectable form. The vaccination needs to be completed at least one week prior to travel and, depending on the type of vaccine, only protects from two to five years. The oral vaccine is contraindicated in patients with depressed immune systems. Details of the vaccination and the chosen vaccine should be discussed with a health-care provider.