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Typhus

Definition

Typhus is a bacterial disease spread by lice or fleas.

Alternative Names

Murine typhus; Epidemic typhus; Endemic typhus; Brill-Zinsser disease; Jail fever

Causes

Typhus is caused by one of two types of bacteria: Rickettsia typhi or Rickettsia prowazekii.

Rickettsia typhi causes murine or endemic typhus.

Rickettsia prowazekii causes epidemic typhus. It is spread by lice. Brill-Zinsser disease is a mild form of epidemic typhus.  It occurs when the bacteria re-activates in a person who was previously infected. It is more common in the elderly.

Symptoms

Symptoms of murine or endemic typhus may include:

Symptoms of epidemic typhus may include:

The early rash is a light rose color and fades when you press on it. Later, the rash becomes dull and red and does not fade. People with severe typhus may also develop small areas of bleeding into the skin (petechiae).

Exams and Tests

A complete blood count (CBC) may show a low white blood cell count, anemia, and low platelets. Other blood tests for typhus may show:

Treatment

Treatment includes antibiotics such as:

Tetracycline taken by mouth can permanently stain teeth that are still forming. It is usually not prescribed for children until after all of their permanent teeth have grown in.

Patients with epidemic typhus may need intravenous fluids and oxygen.

Outlook (Prognosis)

Without treatment, death may occur in 10 - 60% of patients with epidemic typhus. Patients over age 60 have the highest risk of death. Patients who receive treatment quickly should completely recover.

Less than 2% of untreated patients with murine typhus may die. Prompt antibiotic treatment will cure nearly all patients.

Possible Complications

When to Contact a Medical Professional

Call your health care provider if you develop symptoms of typhus. This serious disorder can require emergency care.

Prevention

Avoid areas where you might encounter rat fleas or lice. Good sanitation and public health measures reduce the rat population.

Measures to get rid of lice when an infection has been found include:

References

Dumler JS, Walker DH. Rickettsia typhi (Murine typhus). In: Mandell GL, Bennett JE, Dolin R, eds. Principles and Practice of Infectious Diseases. 7th ed. Philadelphia, Pa: Elsevier Churchill Livingstone; 2009:chap 191.

Raoult D. Rickettsial infections. In: Goldman L, Schafer AI, eds. Cecil Medicine. 24th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 335.

Walker DH, Raoult D. Rickettsia prowazeckii (Epidemic or louse-borne typhus). In: Mandell GL, Bennett JE, Dolin R, eds. Principles and Practice of Infectious Diseases. 7th ed. Philadelphia, Pa: Elsevier Churchill Livingstone; 2009:chap 190.


Review Date: 10/6/2012
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Jatin M. Vyas, MD, PhD, Assistant Professor in Medicine, Harvard Medical School; Assistant in Medicine, Division of Infectious Disease, Department of Medicine, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M. Health Solutions, Ebix, Inc.
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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