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It is important to consider vaccine preventable diseases that may easily caught during travel. From Robert Steffen’s chart, it can be seen that the most common vaccine preventable disease of travelers is hepatitis A. Typhoid is less common, but can be considered. Both hepatitis A and typhoid have a wide geographic distribution. Some countries offer a combined hepatitis A-typhoid vaccine. Entertoxigenic E. coli (ETEC) is an important cause of travelers’ diarrhea and recent vaccine development for cholera have shown some protection for ETEC, however this vaccine offering dual protection probably has limited application in travel medicine. Robert Steffen’s chart of prevalence of various travel related diseases and events can be found in Steffen R, DuPont HL. Travel Medicine: What’s that? J Travel Med 1994; 1: 1-3.