BioEd Online
Bio Ed Online: Mad Cow Disease
A concise but thorough explanation of the causes, symptoms, and steps to take to reduce possible risks of contacting this disease. Contains links to other interesting sites.
Centers for Disease Control and Prevention
Centers for Disease Control: Travelers' Health: Disease Directory
The Centers for Disease Control and Prevention provides information on over 40 diseases that travelers might need to be prepared for. Information includes description of disease, risk for travelers, preventive measures and treatment.