伤寒
Typhoid fever, also known as typhoid, is a disease caused by "Salmonella" serotype Typhi bacteria. Symptoms may vary from mild to severe, and usually begin 6 to 30 days after exposure. Often there is a gradual onset of a high fever over several days. This is commonly accompanied by weakness, abdominal pain, constipation, headaches, and mild vomiting. Some people develop a skin rash with rose colored spots. In severe cases, people may experience confusion. Without treatment, symptoms may last weeks or months. Diarrhea is uncommon. Other people may carry the bacterium without being affected, but they are still able to spread the disease to others. Typhoid fever is a type of enteric fever, along with paratyphoid fever. As far as we currently know, "S. enterica" Typhi only infects and replicates within humans. Typhoid fever can feasibly be eradicated completely if advances in its diagnosis, prevention and treatment are financially supported by governments and philanthropists and if the healthcare infrastructure in regions with endemic Typhoid fever are improved.