The document discusses enteric fever, also known as typhoid fever, which is caused by the Salmonella typhi bacterium. It enters the body through contaminated food or water and causes infection. Key symptoms include sustained fever, headache, abdominal pain, and rose-colored spots on the skin. Complications can include intestinal perforation or hemorrhage. Diagnosis is made through blood or stool cultures to isolate the bacterium or detect antibodies. Untreated, some patients become long-term carriers of S. typhi in their gallbladder and intestines, allowing further transmission of the disease.