Back High-Risk Diseases for Travelers Many diseases pose a high risk for travelers. Listed in the directory below are some of the diseases, for which we have provided a brief overview. African Trypanosomiasis ("African Sleeping Sickness") BSE ("Mad Cow Disease") and vCJD HIV / AIDS Cholera E. coli Dengue Fever Diarrheal Diseases Cryptosporidiosis Diarrhea Traveler's Diarrhea Salmonella Infections Giardiasis Encephalitis Fish Poisoning Hepatitis A Influenza Lyme Disease Malaria Meningitis Rabies Severe Acute Respiratory Syndrome (SARS) Tuberculosis (TB) Typhoid Fever Viral Hemorrhagic Fevers Yellow Fever