URMC / Encyclopedia / Content Search Encyclopedia High-Risk Diseases for Travelers Many diseases pose a high risk for travelers. Click on the links below to learn more about these diseases. African Trypanosomiasis ("African Sleeping Sickness") Mad Cow Disease 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 Zika Virus