What is typhoid fever?

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Last updated: May 15, 2025View editorial policy

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From the Guidelines

Typhoid fever is a bacterial infection caused by Salmonella Typhi that primarily affects the intestinal tract and occasionally the bloodstream, characterized by high fever, abdominal pain, headache, and weakness, and can be treated with antibiotics such as ciprofloxacin, azithromycin, or ceftriaxone, depending on antibiotic resistance patterns, as recommended by the most recent guidelines 1.

Key Characteristics of Typhoid Fever

  • Caused by Salmonella Typhi
  • Affects the intestinal tract and occasionally the bloodstream
  • Characterized by high fever, abdominal pain, headache, and weakness
  • Spreads through contaminated food and water or close contact with infected individuals

Treatment and Management

  • Treatment typically involves antibiotics such as ciprofloxacin (500mg twice daily for 7-10 days), azithromycin (500mg once daily for 7 days), or ceftriaxone (1-2g daily for 10-14 days) depending on antibiotic resistance patterns, as recommended by the World Health Organization 1
  • Supportive care with hydration and fever management is also important
  • Without treatment, typhoid fever can lead to serious complications including intestinal perforation or bleeding

Prevention Measures

  • Vaccination for those traveling to endemic areas, as recommended by the Infectious Diseases Society of America 1
  • Proper handwashing
  • Consuming only safe food and water
  • Avoiding raw vegetables or unpeeled fruits in high-risk regions
  • The bacteria can persist in some treated individuals who become asymptomatic carriers, capable of spreading the infection to others, which explains why proper diagnosis and complete treatment courses are essential, as noted in a study on the diagnosis and management of infectious diarrhea 1

From the Research

Definition of Typhoid Fever

Typhoid fever is an infection caused by the bacterium Salmonella Typhi, which is usually spread through contaminated food or water. The symptoms of typhoid fever include fever, headache, and abdominal pain.

Causes and Transmission

  • Typhoid fever is caused by the bacterium Salmonella Typhi 2, 3, 4, 5, 6
  • The bacterium is usually spread through contaminated food or water 2, 3, 4, 5, 6
  • Poor sanitation and hygiene can contribute to the spread of typhoid fever 2, 3, 4, 5, 6

Treatment and Management

  • Azithromycin and ciprofloxacin are commonly used antibiotics to treat typhoid fever 2, 3, 5, 6
  • Ceftriaxone is also used as a treatment option, especially in cases of multidrug-resistant typhoid fever 4, 6
  • Treatment typically involves a course of antibiotics, and the choice of antibiotic depends on the severity of the infection and the presence of any antibiotic resistance 2, 3, 4, 5, 6

Complications and Prevention

  • Typhoid fever can lead to complications such as intestinal perforation and hemorrhage if left untreated 2, 3, 4, 5, 6
  • Prevention measures include practicing good hygiene, avoiding contaminated food and water, and getting vaccinated against typhoid fever 2, 3, 4, 5, 6

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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