A branch of medicine that specializes in diseases and conditions that are acquired during travel. Travelers to different countries should be aware of the potential for acquiring diseases and injury which are not common in their own country. Immunizations, preventative medications, and general precautions should be considered prior to trips to different parts of the world. Immunizations against hepatitis A, hepatitis B, typhoid, yellowfever, meningococcalmeningitis, rabies, tetanus, diphtheria, polio and others may be recommended or required for travelers to certain countries. Preventative medications against traveler, diarrhea, malaria, tuberculosis, and other diseases may be necessary. Precautions regarding foods, beverages, weather, insect bites, and personal hygiene are important while traveling. Patients with underlying medical diseases, such as kidney disease and diabetes, may need special arrangements in order to travel safely. (Medicinenet.com).