The document discusses the diagnosis and treatment of a 29-year-old man admitted to the hospital with fatigue, anorexia, fever, and difficulty concentrating. The professor questions whether it is cholera or typhoid fever. Key differences between the two diseases are discussed, including that cholera is caused by Vibrio cholerae bacteria releasing a toxin that causes severe watery diarrhea, while typhoid fever is caused by Salmonella typhi bacteria. Symptoms of typhoid fever include sustained high fever, headache, abdominal pain, and diarrhea. Clinical tests that can help diagnose typhoid fever are also outlined, including a blood culture that can detect S. typhi bacteria in the first week, urine and stool tests. The